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Finding the Fourth Proportional to 123,689.14, 170,691.51 and 67,100.92

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Solution

The fourth proportional to 123,689.14, 170,691.51 and 67,100.92 is: 92,599.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,689.14 : 170,691.51 = 67,100.92 : x
  2. Step 2: Convert to fraction form
    123,689.14/170,691.51 = 67,100.92/x
  3. Step 3: Cross multiply
    123,689.14x = 170,691.51 × 67,100.92
  4. Step 4: Simplify right side
    123,689.14x = 11,453,557,357.19
  5. Step 5: Solve for x
    x = 11,453,557,357.19/123,689.14
  6. Step 6: Final answer
    x = 92,599.54

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1.5x scale

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.