Home / 83,257.12-124,973.70-81,376.84

Finding the Fourth Proportional to 83,257.12, 124,973.70 and 81,376.84

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Solution

The fourth proportional to 83,257.12, 124,973.70 and 81,376.84 is: 122,151.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,257.12 : 124,973.70 = 81,376.84 : x
  2. Step 2: Convert to fraction form
    83,257.12/124,973.70 = 81,376.84/x
  3. Step 3: Cross multiply
    83,257.12x = 124,973.70 × 81,376.84
  4. Step 4: Simplify right side
    83,257.12x = 10,169,964,789.11
  5. Step 5: Solve for x
    x = 10,169,964,789.11/83,257.12
  6. Step 6: Final answer
    x = 122,151.29

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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.