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Finding the Fourth Proportional to 157,508.40, 217,342.80 and 89,500.80

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Solution

The fourth proportional to 157,508.40, 217,342.80 and 89,500.80 is: 123,500.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,508.40 : 217,342.80 = 89,500.80 : x
  2. Step 2: Convert to fraction form
    157,508.40/217,342.80 = 89,500.80/x
  3. Step 3: Cross multiply
    157,508.40x = 217,342.80 × 89,500.80
  4. Step 4: Simplify right side
    157,508.40x = 19,452,354,474.24
  5. Step 5: Solve for x
    x = 19,452,354,474.24/157,508.40
  6. Step 6: Final answer
    x = 123,500.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.