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Finding the Fourth Proportional to 88,892.80, 133,339.20 and 82,412.80

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Solution

The fourth proportional to 88,892.80, 133,339.20 and 82,412.80 is: 123,619.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,892.80 : 133,339.20 = 82,412.80 : x
  2. Step 2: Convert to fraction form
    88,892.80/133,339.20 = 82,412.80/x
  3. Step 3: Cross multiply
    88,892.80x = 133,339.20 × 82,412.80
  4. Step 4: Simplify right side
    88,892.80x = 10,988,856,821.76
  5. Step 5: Solve for x
    x = 10,988,856,821.76/88,892.80
  6. Step 6: Final answer
    x = 123,619.20

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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.