Home / 120,552.12-180,840.33-31,811.76

Finding the Fourth Proportional to 120,552.12, 180,840.33 and 31,811.76

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Solution

The fourth proportional to 120,552.12, 180,840.33 and 31,811.76 is: 47,720.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,552.12 : 180,840.33 = 31,811.76 : x
  2. Step 2: Convert to fraction form
    120,552.12/180,840.33 = 31,811.76/x
  3. Step 3: Cross multiply
    120,552.12x = 180,840.33 × 31,811.76
  4. Step 4: Simplify right side
    120,552.12x = 5,752,849,176.28
  5. Step 5: Solve for x
    x = 5,752,849,176.28/120,552.12
  6. Step 6: Final answer
    x = 47,720.85

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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.