Home / 136,211.20-204,470.40-80,838.40

Finding the Fourth Proportional to 136,211.20, 204,470.40 and 80,838.40

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Solution

The fourth proportional to 136,211.20, 204,470.40 and 80,838.40 is: 121,348.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,211.20 : 204,470.40 = 80,838.40 : x
  2. Step 2: Convert to fraction form
    136,211.20/204,470.40 = 80,838.40/x
  3. Step 3: Cross multiply
    136,211.20x = 204,470.40 × 80,838.40
  4. Step 4: Simplify right side
    136,211.20x = 16,529,059,983.36
  5. Step 5: Solve for x
    x = 16,529,059,983.36/136,211.20
  6. Step 6: Final answer
    x = 121,348.76

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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.