Home / 120,218.47-180,344.11-50,081.38

Finding the Fourth Proportional to 120,218.47, 180,344.11 and 50,081.38

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Solution

The fourth proportional to 120,218.47, 180,344.11 and 50,081.38 is: 75,128.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,218.47 : 180,344.11 = 50,081.38 : x
  2. Step 2: Convert to fraction form
    120,218.47/180,344.11 = 50,081.38/x
  3. Step 3: Cross multiply
    120,218.47x = 180,344.11 × 50,081.38
  4. Step 4: Simplify right side
    120,218.47x = 9,031,881,001.95
  5. Step 5: Solve for x
    x = 9,031,881,001.95/120,218.47
  6. Step 6: Final answer
    x = 75,128.90

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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.