Home / 120,546.12-180,831.33-31,805.76

Finding the Fourth Proportional to 120,546.12, 180,831.33 and 31,805.76

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Solution

The fourth proportional to 120,546.12, 180,831.33 and 31,805.76 is: 47,711.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,546.12 : 180,831.33 = 31,805.76 : x
  2. Step 2: Convert to fraction form
    120,546.12/180,831.33 = 31,805.76/x
  3. Step 3: Cross multiply
    120,546.12x = 180,831.33 × 31,805.76
  4. Step 4: Simplify right side
    120,546.12x = 5,751,477,882.46
  5. Step 5: Solve for x
    x = 5,751,477,882.46/120,546.12
  6. Step 6: Final answer
    x = 47,711.85

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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.