Home / 83,172.02-125,319.15-68,704.88

Finding the Fourth Proportional to 83,172.02, 125,319.15 and 68,704.88

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Solution

The fourth proportional to 83,172.02, 125,319.15 and 68,704.88 is: 103,520.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,172.02 : 125,319.15 = 68,704.88 : x
  2. Step 2: Convert to fraction form
    83,172.02/125,319.15 = 68,704.88/x
  3. Step 3: Cross multiply
    83,172.02x = 125,319.15 × 68,704.88
  4. Step 4: Simplify right side
    83,172.02x = 8,610,036,535.86
  5. Step 5: Solve for x
    x = 8,610,036,535.86/83,172.02
  6. Step 6: Final answer
    x = 103,520.84

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.