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Finding the Fourth Proportional to 88,876.80, 133,315.20 and 80,275.20

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Solution

The fourth proportional to 88,876.80, 133,315.20 and 80,275.20 is: 120,412.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,876.80 : 133,315.20 = 80,275.20 : x
  2. Step 2: Convert to fraction form
    88,876.80/133,315.20 = 80,275.20/x
  3. Step 3: Cross multiply
    88,876.80x = 133,315.20 × 80,275.20
  4. Step 4: Simplify right side
    88,876.80x = 10,701,904,343.04
  5. Step 5: Solve for x
    x = 10,701,904,343.04/88,876.80
  6. Step 6: Final answer
    x = 120,412.80

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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.