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Finding the Fourth Proportional to 83,233.60, 124,850.40 and 78,956.80

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Solution

The fourth proportional to 83,233.60, 124,850.40 and 78,956.80 is: 118,435.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,233.60 : 124,850.40 = 78,956.80 : x
  2. Step 2: Convert to fraction form
    83,233.60/124,850.40 = 78,956.80/x
  3. Step 3: Cross multiply
    83,233.60x = 124,850.40 × 78,956.80
  4. Step 4: Simplify right side
    83,233.60x = 9,857,788,062.72
  5. Step 5: Solve for x
    x = 9,857,788,062.72/83,233.60
  6. Step 6: Final answer
    x = 118,435.20

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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.