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Finding the Fourth Proportional to 123,394.68, 170,281.71 and 69,677.91

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Solution

The fourth proportional to 123,394.68, 170,281.71 and 69,677.91 is: 96,153.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,394.68 : 170,281.71 = 69,677.91 : x
  2. Step 2: Convert to fraction form
    123,394.68/170,281.71 = 69,677.91/x
  3. Step 3: Cross multiply
    123,394.68x = 170,281.71 × 69,677.91
  4. Step 4: Simplify right side
    123,394.68x = 11,864,873,664.03
  5. Step 5: Solve for x
    x = 11,864,873,664.03/123,394.68
  6. Step 6: Final answer
    x = 96,153.85

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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.