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Finding the Fourth Proportional to 123,113.11, 169,896.68 and 69,400.39

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Solution

The fourth proportional to 123,113.11, 169,896.68 and 69,400.39 is: 95,772.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,113.11 : 169,896.68 = 69,400.39 : x
  2. Step 2: Convert to fraction form
    123,113.11/169,896.68 = 69,400.39/x
  3. Step 3: Cross multiply
    123,113.11x = 169,896.68 × 69,400.39
  4. Step 4: Simplify right side
    123,113.11x = 11,790,895,851.71
  5. Step 5: Solve for x
    x = 11,790,895,851.71/123,113.11
  6. Step 6: Final answer
    x = 95,772.87

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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.