Home / 136,988.28-205,385.83-52,677.61

Finding the Fourth Proportional to 136,988.28, 205,385.83 and 52,677.61

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Solution

The fourth proportional to 136,988.28, 205,385.83 and 52,677.61 is: 78,979.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,988.28 : 205,385.83 = 52,677.61 : x
  2. Step 2: Convert to fraction form
    136,988.28/205,385.83 = 52,677.61/x
  3. Step 3: Cross multiply
    136,988.28x = 205,385.83 × 52,677.61
  4. Step 4: Simplify right side
    136,988.28x = 10,819,234,007.11
  5. Step 5: Solve for x
    x = 10,819,234,007.11/136,988.28
  6. Step 6: Final answer
    x = 78,979.27

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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.