Home / 157,439.90-217,248.09-89,432.30

Finding the Fourth Proportional to 157,439.90, 217,248.09 and 89,432.30

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Solution

The fourth proportional to 157,439.90, 217,248.09 and 89,432.30 is: 123,405.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,439.90 : 217,248.09 = 89,432.30 : x
  2. Step 2: Convert to fraction form
    157,439.90/217,248.09 = 89,432.30/x
  3. Step 3: Cross multiply
    157,439.90x = 217,248.09 × 89,432.30
  4. Step 4: Simplify right side
    157,439.90x = 19,428,996,359.31
  5. Step 5: Solve for x
    x = 19,428,996,359.31/157,439.90
  6. Step 6: Final answer
    x = 123,405.80

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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.