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Finding the Fourth Proportional to 123,691.68, 170,694.54 and 69,975.59

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Solution

The fourth proportional to 123,691.68, 170,694.54 and 69,975.59 is: 96,566.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,691.68 : 170,694.54 = 69,975.59 : x
  2. Step 2: Convert to fraction form
    123,691.68/170,694.54 = 69,975.59/x
  3. Step 3: Cross multiply
    123,691.68x = 170,694.54 × 69,975.59
  4. Step 4: Simplify right side
    123,691.68x = 11,944,450,292.81
  5. Step 5: Solve for x
    x = 11,944,450,292.81/123,691.68
  6. Step 6: Final answer
    x = 96,566.32

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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.