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Finding the Fourth Proportional to 79,132.80, 118,699.20 and 75,244.80

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Solution

The fourth proportional to 79,132.80, 118,699.20 and 75,244.80 is: 112,867.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,132.80 : 118,699.20 = 75,244.80 : x
  2. Step 2: Convert to fraction form
    79,132.80/118,699.20 = 75,244.80/x
  3. Step 3: Cross multiply
    79,132.80x = 118,699.20 × 75,244.80
  4. Step 4: Simplify right side
    79,132.80x = 8,931,497,564.16
  5. Step 5: Solve for x
    x = 8,931,497,564.16/79,132.80
  6. Step 6: Final answer
    x = 112,867.20

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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.