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Finding the Fourth Proportional to 83,084.80, 124,627.20 and 74,099.20

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Solution

The fourth proportional to 83,084.80, 124,627.20 and 74,099.20 is: 111,148.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,084.80 : 124,627.20 = 74,099.20 : x
  2. Step 2: Convert to fraction form
    83,084.80/124,627.20 = 74,099.20/x
  3. Step 3: Cross multiply
    83,084.80x = 124,627.20 × 74,099.20
  4. Step 4: Simplify right side
    83,084.80x = 9,234,775,818.24
  5. Step 5: Solve for x
    x = 9,234,775,818.24/83,084.80
  6. Step 6: Final answer
    x = 111,148.80

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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.