Home / 80,765.40-121,148.10-73,248.60

Finding the Fourth Proportional to 80,765.40, 121,148.10 and 73,248.60

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Solution

The fourth proportional to 80,765.40, 121,148.10 and 73,248.60 is: 109,872.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,765.40 : 121,148.10 = 73,248.60 : x
  2. Step 2: Convert to fraction form
    80,765.40/121,148.10 = 73,248.60/x
  3. Step 3: Cross multiply
    80,765.40x = 121,148.10 × 73,248.60
  4. Step 4: Simplify right side
    80,765.40x = 8,873,928,717.66
  5. Step 5: Solve for x
    x = 8,873,928,717.66/80,765.40
  6. Step 6: Final answer
    x = 109,872.90

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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.