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Finding the Fourth Proportional to 83,253.60, 124,880.40 and 81,285.30

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Solution

The fourth proportional to 83,253.60, 124,880.40 and 81,285.30 is: 121,927.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,253.60 : 124,880.40 = 81,285.30 : x
  2. Step 2: Convert to fraction form
    83,253.60/124,880.40 = 81,285.30/x
  3. Step 3: Cross multiply
    83,253.60x = 124,880.40 × 81,285.30
  4. Step 4: Simplify right side
    83,253.60x = 10,150,940,778.12
  5. Step 5: Solve for x
    x = 10,150,940,778.12/83,253.60
  6. Step 6: Final answer
    x = 121,927.95

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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.