Home / 138,722.80-208,084.20-123,960.55

Finding the Fourth Proportional to 138,722.80, 208,084.20 and 123,960.55

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Solution

The fourth proportional to 138,722.80, 208,084.20 and 123,960.55 is: 185,940.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,722.80 : 208,084.20 = 123,960.55 : x
  2. Step 2: Convert to fraction form
    138,722.80/208,084.20 = 123,960.55/x
  3. Step 3: Cross multiply
    138,722.80x = 208,084.20 × 123,960.55
  4. Step 4: Simplify right side
    138,722.80x = 25,794,231,878.31
  5. Step 5: Solve for x
    x = 25,794,231,878.31/138,722.80
  6. Step 6: Final answer
    x = 185,940.83

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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.