Home / 100,125.83-150,169.61-30,005.15

Finding the Fourth Proportional to 100,125.83, 150,169.61 and 30,005.15

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Solution

The fourth proportional to 100,125.83, 150,169.61 and 30,005.15 is: 45,001.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,125.83 : 150,169.61 = 30,005.15 : x
  2. Step 2: Convert to fraction form
    100,125.83/150,169.61 = 30,005.15/x
  3. Step 3: Cross multiply
    100,125.83x = 150,169.61 × 30,005.15
  4. Step 4: Simplify right side
    100,125.83x = 4,505,861,272.12
  5. Step 5: Solve for x
    x = 4,505,861,272.12/100,125.83
  6. Step 6: Final answer
    x = 45,001.98

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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.