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Finding the Fourth Proportional to 123,156.48, 169,956.72 and 66,567.72

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Solution

The fourth proportional to 123,156.48, 169,956.72 and 66,567.72 is: 91,863.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,156.48 : 169,956.72 = 66,567.72 : x
  2. Step 2: Convert to fraction form
    123,156.48/169,956.72 = 66,567.72/x
  3. Step 3: Cross multiply
    123,156.48x = 169,956.72 × 66,567.72
  4. Step 4: Simplify right side
    123,156.48x = 11,313,631,349.08
  5. Step 5: Solve for x
    x = 11,313,631,349.08/123,156.48
  6. Step 6: Final answer
    x = 91,863.87

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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.