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Finding the Fourth Proportional to 128,737.26, 192,701.97 and 88,521.57

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Solution

The fourth proportional to 128,737.26, 192,701.97 and 88,521.57 is: 132,504.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,737.26 : 192,701.97 = 88,521.57 : x
  2. Step 2: Convert to fraction form
    128,737.26/192,701.97 = 88,521.57/x
  3. Step 3: Cross multiply
    128,737.26x = 192,701.97 × 88,521.57
  4. Step 4: Simplify right side
    128,737.26x = 17,058,280,926.49
  5. Step 5: Solve for x
    x = 17,058,280,926.49/128,737.26
  6. Step 6: Final answer
    x = 132,504.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.