Home / 80,927.10-121,390.65-80,408.70

Finding the Fourth Proportional to 80,927.10, 121,390.65 and 80,408.70

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Solution

The fourth proportional to 80,927.10, 121,390.65 and 80,408.70 is: 120,613.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,927.10 : 121,390.65 = 80,408.70 : x
  2. Step 2: Convert to fraction form
    80,927.10/121,390.65 = 80,408.70/x
  3. Step 3: Cross multiply
    80,927.10x = 121,390.65 × 80,408.70
  4. Step 4: Simplify right side
    80,927.10x = 9,760,864,358.66
  5. Step 5: Solve for x
    x = 9,760,864,358.66/80,927.10
  6. Step 6: Final answer
    x = 120,613.05

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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.