Home / 120,007.30-180,010.95-100,761.70

Finding the Fourth Proportional to 120,007.30, 180,010.95 and 100,761.70

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Solution

The fourth proportional to 120,007.30, 180,010.95 and 100,761.70 is: 151,142.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,007.30 : 180,010.95 = 100,761.70 : x
  2. Step 2: Convert to fraction form
    120,007.30/180,010.95 = 100,761.70/x
  3. Step 3: Cross multiply
    120,007.30x = 180,010.95 × 100,761.70
  4. Step 4: Simplify right side
    120,007.30x = 18,138,209,340.62
  5. Step 5: Solve for x
    x = 18,138,209,340.62/120,007.30
  6. Step 6: Final answer
    x = 151,142.55

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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.