Home / 120,320.72-180,658.50-67,116.66

Finding the Fourth Proportional to 120,320.72, 180,658.50 and 67,116.66

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Solution

The fourth proportional to 120,320.72, 180,658.50 and 67,116.66 is: 100,773.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,320.72 : 180,658.50 = 67,116.66 : x
  2. Step 2: Convert to fraction form
    120,320.72/180,658.50 = 67,116.66/x
  3. Step 3: Cross multiply
    120,320.72x = 180,658.50 × 67,116.66
  4. Step 4: Simplify right side
    120,320.72x = 12,125,195,120.61
  5. Step 5: Solve for x
    x = 12,125,195,120.61/120,320.72
  6. Step 6: Final answer
    x = 100,773.96

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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.