Home / 136,781.28-205,095.24-47,999.88

Finding the Fourth Proportional to 136,781.28, 205,095.24 and 47,999.88

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Solution

The fourth proportional to 136,781.28, 205,095.24 and 47,999.88 is: 71,972.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,781.28 : 205,095.24 = 47,999.88 : x
  2. Step 2: Convert to fraction form
    136,781.28/205,095.24 = 47,999.88/x
  3. Step 3: Cross multiply
    136,781.28x = 205,095.24 × 47,999.88
  4. Step 4: Simplify right side
    136,781.28x = 9,844,546,908.57
  5. Step 5: Solve for x
    x = 9,844,546,908.57/136,781.28
  6. Step 6: Final answer
    x = 71,972.91

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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.