Home / 138,357.15-206,389.28-134,278.39

Finding the Fourth Proportional to 138,357.15, 206,389.28 and 134,278.39

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Solution

The fourth proportional to 138,357.15, 206,389.28 and 134,278.39 is: 200,304.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,357.15 : 206,389.28 = 134,278.39 : x
  2. Step 2: Convert to fraction form
    138,357.15/206,389.28 = 134,278.39/x
  3. Step 3: Cross multiply
    138,357.15x = 206,389.28 × 134,278.39
  4. Step 4: Simplify right side
    138,357.15x = 27,713,620,825.34
  5. Step 5: Solve for x
    x = 27,713,620,825.34/138,357.15
  6. Step 6: Final answer
    x = 200,304.95

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.