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Finding the Fourth Proportional to 123,154.74, 169,953.32 and 66,566.12

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Solution

The fourth proportional to 123,154.74, 169,953.32 and 66,566.12 is: 91,861.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,154.74 : 169,953.32 = 66,566.12 : x
  2. Step 2: Convert to fraction form
    123,154.74/169,953.32 = 66,566.12/x
  3. Step 3: Cross multiply
    123,154.74x = 169,953.32 × 66,566.12
  4. Step 4: Simplify right side
    123,154.74x = 11,313,132,410.17
  5. Step 5: Solve for x
    x = 11,313,132,410.17/123,154.74
  6. Step 6: Final answer
    x = 91,861.12

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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.