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Finding the Fourth Proportional to 80,841.60, 121,262.40 and 76,248.90

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Solution

The fourth proportional to 80,841.60, 121,262.40 and 76,248.90 is: 114,373.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,841.60 : 121,262.40 = 76,248.90 : x
  2. Step 2: Convert to fraction form
    80,841.60/121,262.40 = 76,248.90/x
  3. Step 3: Cross multiply
    80,841.60x = 121,262.40 × 76,248.90
  4. Step 4: Simplify right side
    80,841.60x = 9,246,124,611.36
  5. Step 5: Solve for x
    x = 9,246,124,611.36/80,841.60
  6. Step 6: Final answer
    x = 114,373.35

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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.