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Finding the Fourth Proportional to 136,787.16, 188,617.50 and 88,951.80

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Solution

The fourth proportional to 136,787.16, 188,617.50 and 88,951.80 is: 122,656.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,787.16 : 188,617.50 = 88,951.80 : x
  2. Step 2: Convert to fraction form
    136,787.16/188,617.50 = 88,951.80/x
  3. Step 3: Cross multiply
    136,787.16x = 188,617.50 × 88,951.80
  4. Step 4: Simplify right side
    136,787.16x = 16,777,866,136.50
  5. Step 5: Solve for x
    x = 16,777,866,136.50/136,787.16
  6. Step 6: Final answer
    x = 122,656.73

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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.