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Finding the Fourth Proportional to 123,691.56, 170,694.37 and 69,975.46

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Solution

The fourth proportional to 123,691.56, 170,694.37 and 69,975.46 is: 96,566.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,691.56 : 170,694.37 = 69,975.46 : x
  2. Step 2: Convert to fraction form
    123,691.56/170,694.37 = 69,975.46/x
  3. Step 3: Cross multiply
    123,691.56x = 170,694.37 × 69,975.46
  4. Step 4: Simplify right side
    123,691.56x = 11,944,417,060.16
  5. Step 5: Solve for x
    x = 11,944,417,060.16/123,691.56
  6. Step 6: Final answer
    x = 96,566.14

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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.