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Finding the Fourth Proportional to 100,342.59, 150,538.98 and 70,818.09

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Solution

The fourth proportional to 100,342.59, 150,538.98 and 70,818.09 is: 106,244.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,342.59 : 150,538.98 = 70,818.09 : x
  2. Step 2: Convert to fraction form
    100,342.59/150,538.98 = 70,818.09/x
  3. Step 3: Cross multiply
    100,342.59x = 150,538.98 × 70,818.09
  4. Step 4: Simplify right side
    100,342.59x = 10,660,882,735.19
  5. Step 5: Solve for x
    x = 10,660,882,735.19/100,342.59
  6. Step 6: Final answer
    x = 106,244.85

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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.