Home / 83,918.20-125,877.30-80,637.70

Finding the Fourth Proportional to 83,918.20, 125,877.30 and 80,637.70

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Solution

The fourth proportional to 83,918.20, 125,877.30 and 80,637.70 is: 120,956.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,918.20 : 125,877.30 = 80,637.70 : x
  2. Step 2: Convert to fraction form
    83,918.20/125,877.30 = 80,637.70/x
  3. Step 3: Cross multiply
    83,918.20x = 125,877.30 × 80,637.70
  4. Step 4: Simplify right side
    83,918.20x = 10,150,455,954.21
  5. Step 5: Solve for x
    x = 10,150,455,954.21/83,918.20
  6. Step 6: Final answer
    x = 120,956.55

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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.