Home / 187,781.68-281,665.23-75,428.20

Finding the Fourth Proportional to 187,781.68, 281,665.23 and 75,428.20

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Solution

The fourth proportional to 187,781.68, 281,665.23 and 75,428.20 is: 113,139.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,781.68 : 281,665.23 = 75,428.20 : x
  2. Step 2: Convert to fraction form
    187,781.68/281,665.23 = 75,428.20/x
  3. Step 3: Cross multiply
    187,781.68x = 281,665.23 × 75,428.20
  4. Step 4: Simplify right side
    187,781.68x = 21,245,501,301.49
  5. Step 5: Solve for x
    x = 21,245,501,301.49/187,781.68
  6. Step 6: Final answer
    x = 113,139.37

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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.