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Finding the Fourth Proportional to 137,089.48, 205,568.80 and 80,179.44

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Solution

The fourth proportional to 137,089.48, 205,568.80 and 80,179.44 is: 120,230.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,089.48 : 205,568.80 = 80,179.44 : x
  2. Step 2: Convert to fraction form
    137,089.48/205,568.80 = 80,179.44/x
  3. Step 3: Cross multiply
    137,089.48x = 205,568.80 × 80,179.44
  4. Step 4: Simplify right side
    137,089.48x = 16,482,391,265.47
  5. Step 5: Solve for x
    x = 16,482,391,265.47/137,089.48
  6. Step 6: Final answer
    x = 120,230.90

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1.5x scale

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.