Home / 204,126.80-306,143.40-77,781.38

Finding the Fourth Proportional to 204,126.80, 306,143.40 and 77,781.38

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Solution

The fourth proportional to 204,126.80, 306,143.40 and 77,781.38 is: 116,654.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,126.80 : 306,143.40 = 77,781.38 : x
  2. Step 2: Convert to fraction form
    204,126.80/306,143.40 = 77,781.38/x
  3. Step 3: Cross multiply
    204,126.80x = 306,143.40 × 77,781.38
  4. Step 4: Simplify right side
    204,126.80x = 23,812,256,129.89
  5. Step 5: Solve for x
    x = 23,812,256,129.89/204,126.80
  6. Step 6: Final answer
    x = 116,654.24

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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.