Home / 120,744.40-181,147.17-85,275

Finding the Fourth Proportional to 120,744.40, 181,147.17 and 85,275

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Solution

The fourth proportional to 120,744.40, 181,147.17 and 85,275 is: 127,934.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,744.40 : 181,147.17 = 85,275 : x
  2. Step 2: Convert to fraction form
    120,744.40/181,147.17 = 85,275/x
  3. Step 3: Cross multiply
    120,744.40x = 181,147.17 × 85,275
  4. Step 4: Simplify right side
    120,744.40x = 15,447,324,495.38
  5. Step 5: Solve for x
    x = 15,447,324,495.38/120,744.40
  6. Step 6: Final answer
    x = 127,934.09

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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.