Home / 120,531.68-180,799.04-83,081.70

Finding the Fourth Proportional to 120,531.68, 180,799.04 and 83,081.70

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Solution

The fourth proportional to 120,531.68, 180,799.04 and 83,081.70 is: 124,623.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,531.68 : 180,799.04 = 83,081.70 : x
  2. Step 2: Convert to fraction form
    120,531.68/180,799.04 = 83,081.70/x
  3. Step 3: Cross multiply
    120,531.68x = 180,799.04 × 83,081.70
  4. Step 4: Simplify right side
    120,531.68x = 15,021,091,601.57
  5. Step 5: Solve for x
    x = 15,021,091,601.57/120,531.68
  6. Step 6: Final answer
    x = 124,623.60

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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.