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Finding the Fourth Proportional to 157,319.62, 217,123.29 and 89,353.54

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Solution

The fourth proportional to 157,319.62, 217,123.29 and 89,353.54 is: 123,320.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,319.62 : 217,123.29 = 89,353.54 : x
  2. Step 2: Convert to fraction form
    157,319.62/217,123.29 = 89,353.54/x
  3. Step 3: Cross multiply
    157,319.62x = 217,123.29 × 89,353.54
  4. Step 4: Simplify right side
    157,319.62x = 19,400,734,577.95
  5. Step 5: Solve for x
    x = 19,400,734,577.95/157,319.62
  6. Step 6: Final answer
    x = 123,320.50

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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.