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Finding the Fourth Proportional to 157,137.96, 216,872.72 and 89,171.68

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Solution

The fourth proportional to 157,137.96, 216,872.72 and 89,171.68 is: 123,069.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,137.96 : 216,872.72 = 89,171.68 : x
  2. Step 2: Convert to fraction form
    157,137.96/216,872.72 = 89,171.68/x
  3. Step 3: Cross multiply
    157,137.96x = 216,872.72 × 89,171.68
  4. Step 4: Simplify right side
    157,137.96x = 19,338,904,788.57
  5. Step 5: Solve for x
    x = 19,338,904,788.57/157,137.96
  6. Step 6: Final answer
    x = 123,069.59

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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.