Home / 83,259.12-124,976.70-81,378.84

Finding the Fourth Proportional to 83,259.12, 124,976.70 and 81,378.84

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Solution

The fourth proportional to 83,259.12, 124,976.70 and 81,378.84 is: 122,154.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,259.12 : 124,976.70 = 81,378.84 : x
  2. Step 2: Convert to fraction form
    83,259.12/124,976.70 = 81,378.84/x
  3. Step 3: Cross multiply
    83,259.12x = 124,976.70 × 81,378.84
  4. Step 4: Simplify right side
    83,259.12x = 10,170,458,873.03
  5. Step 5: Solve for x
    x = 10,170,458,873.03/83,259.12
  6. Step 6: Final answer
    x = 122,154.29

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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.