Home / 157,440.40-217,248.78-89,432.80

Finding the Fourth Proportional to 157,440.40, 217,248.78 and 89,432.80

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Solution

The fourth proportional to 157,440.40, 217,248.78 and 89,432.80 is: 123,406.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,440.40 : 217,248.78 = 89,432.80 : x
  2. Step 2: Convert to fraction form
    157,440.40/217,248.78 = 89,432.80/x
  3. Step 3: Cross multiply
    157,440.40x = 217,248.78 × 89,432.80
  4. Step 4: Simplify right side
    157,440.40x = 19,429,166,691.98
  5. Step 5: Solve for x
    x = 19,429,166,691.98/157,440.40
  6. Step 6: Final answer
    x = 123,406.49

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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.