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Finding the Fourth Proportional to 137,026.80, 205,540.20 and 126,529.20

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Solution

The fourth proportional to 137,026.80, 205,540.20 and 126,529.20 is: 189,793.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,026.80 : 205,540.20 = 126,529.20 : x
  2. Step 2: Convert to fraction form
    137,026.80/205,540.20 = 126,529.20/x
  3. Step 3: Cross multiply
    137,026.80x = 205,540.20 × 126,529.20
  4. Step 4: Simplify right side
    137,026.80x = 26,006,837,073.84
  5. Step 5: Solve for x
    x = 26,006,837,073.84/137,026.80
  6. Step 6: Final answer
    x = 189,793.80

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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.