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Finding the Fourth Proportional to 122,988.82, 169,737.33 and 75,273.94

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Solution

The fourth proportional to 122,988.82, 169,737.33 and 75,273.94 is: 103,885.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,988.82 : 169,737.33 = 75,273.94 : x
  2. Step 2: Convert to fraction form
    122,988.82/169,737.33 = 75,273.94/x
  3. Step 3: Cross multiply
    122,988.82x = 169,737.33 × 75,273.94
  4. Step 4: Simplify right side
    122,988.82x = 12,776,797,594.18
  5. Step 5: Solve for x
    x = 12,776,797,594.18/122,988.82
  6. Step 6: Final answer
    x = 103,885.85

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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.