Home / 100,609,052.45-150,913,578.68-80,453,660.45

Finding the Fourth Proportional to 100,609,052.45, 150,913,578.68 and 80,453,660.45

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Solution

The fourth proportional to 100,609,052.45, 150,913,578.68 and 80,453,660.45 is: 120,680,490.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,609,052.45 : 150,913,578.68 = 80,453,660.45 : x
  2. Step 2: Convert to fraction form
    100,609,052.45/150,913,578.68 = 80,453,660.45/x
  3. Step 3: Cross multiply
    100,609,052.45x = 150,913,578.68 × 80,453,660.45
  4. Step 4: Simplify right side
    100,609,052.45x = 12,141,549,816,415,080
  5. Step 5: Solve for x
    x = 12,141,549,816,415,080/100,609,052.45
  6. Step 6: Final answer
    x = 120,680,490.68

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.