Home / 120,694.18-180,888.06-54,131.62

Finding the Fourth Proportional to 120,694.18, 180,888.06 and 54,131.62

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Solution

The fourth proportional to 120,694.18, 180,888.06 and 54,131.62 is: 81,128.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,694.18 : 180,888.06 = 54,131.62 : x
  2. Step 2: Convert to fraction form
    120,694.18/180,888.06 = 54,131.62/x
  3. Step 3: Cross multiply
    120,694.18x = 180,888.06 × 54,131.62
  4. Step 4: Simplify right side
    120,694.18x = 9,791,763,726.46
  5. Step 5: Solve for x
    x = 9,791,763,726.46/120,694.18
  6. Step 6: Final answer
    x = 81,128.71

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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.