Home / 120,887.75-180,444.33-111,981.20

Finding the Fourth Proportional to 120,887.75, 180,444.33 and 111,981.20

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Solution

The fourth proportional to 120,887.75, 180,444.33 and 111,981.20 is: 167,149.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,887.75 : 180,444.33 = 111,981.20 : x
  2. Step 2: Convert to fraction form
    120,887.75/180,444.33 = 111,981.20/x
  3. Step 3: Cross multiply
    120,887.75x = 180,444.33 × 111,981.20
  4. Step 4: Simplify right side
    120,887.75x = 20,206,371,704.37
  5. Step 5: Solve for x
    x = 20,206,371,704.37/120,887.75
  6. Step 6: Final answer
    x = 167,149.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.