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Finding the Fourth Proportional to 123,113.70, 169,898.04 and 69,393.96

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Solution

The fourth proportional to 123,113.70, 169,898.04 and 69,393.96 is: 95,764.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,113.70 : 169,898.04 = 69,393.96 : x
  2. Step 2: Convert to fraction form
    123,113.70/169,898.04 = 69,393.96/x
  3. Step 3: Cross multiply
    123,113.70x = 169,898.04 × 69,393.96
  4. Step 4: Simplify right side
    123,113.70x = 11,789,897,791.84
  5. Step 5: Solve for x
    x = 11,789,897,791.84/123,113.70
  6. Step 6: Final answer
    x = 95,764.30

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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.