Home / 80,848.10-121,272.15-80,329.70

Finding the Fourth Proportional to 80,848.10, 121,272.15 and 80,329.70

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Solution

The fourth proportional to 80,848.10, 121,272.15 and 80,329.70 is: 120,494.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,848.10 : 121,272.15 = 80,329.70 : x
  2. Step 2: Convert to fraction form
    80,848.10/121,272.15 = 80,329.70/x
  3. Step 3: Cross multiply
    80,848.10x = 121,272.15 × 80,329.70
  4. Step 4: Simplify right side
    80,848.10x = 9,741,755,427.86
  5. Step 5: Solve for x
    x = 9,741,755,427.86/80,848.10
  6. Step 6: Final answer
    x = 120,494.55

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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.