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Finding the Fourth Proportional to 509,146.13, 763,719.19 and 130,067.71

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Solution

The fourth proportional to 509,146.13, 763,719.19 and 130,067.71 is: 195,101.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,146.13 : 763,719.19 = 130,067.71 : x
  2. Step 2: Convert to fraction form
    509,146.13/763,719.19 = 130,067.71/x
  3. Step 3: Cross multiply
    509,146.13x = 763,719.19 × 130,067.71
  4. Step 4: Simplify right side
    509,146.13x = 99,335,203,891.89
  5. Step 5: Solve for x
    x = 99,335,203,891.89/509,146.13
  6. Step 6: Final answer
    x = 195,101.56

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Similar ratio
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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.