Home / 138,013.61-206,756.42-115,667.24

Finding the Fourth Proportional to 138,013.61, 206,756.42 and 115,667.24

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Solution

The fourth proportional to 138,013.61, 206,756.42 and 115,667.24 is: 173,279.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,013.61 : 206,756.42 = 115,667.24 : x
  2. Step 2: Convert to fraction form
    138,013.61/206,756.42 = 115,667.24/x
  3. Step 3: Cross multiply
    138,013.61x = 206,756.42 × 115,667.24
  4. Step 4: Simplify right side
    138,013.61x = 23,914,942,841.56
  5. Step 5: Solve for x
    x = 23,914,942,841.56/138,013.61
  6. Step 6: Final answer
    x = 173,279.60

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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.