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Finding the Fourth Proportional to 118,207.20, 177,310.80 and 80,882.40

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Solution

The fourth proportional to 118,207.20, 177,310.80 and 80,882.40 is: 121,323.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,207.20 : 177,310.80 = 80,882.40 : x
  2. Step 2: Convert to fraction form
    118,207.20/177,310.80 = 80,882.40/x
  3. Step 3: Cross multiply
    118,207.20x = 177,310.80 × 80,882.40
  4. Step 4: Simplify right side
    118,207.20x = 14,341,323,049.92
  5. Step 5: Solve for x
    x = 14,341,323,049.92/118,207.20
  6. Step 6: Final answer
    x = 121,323.60

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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.