Home / 83,966.40-125,730.90-80,029.80

Finding the Fourth Proportional to 83,966.40, 125,730.90 and 80,029.80

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Solution

The fourth proportional to 83,966.40, 125,730.90 and 80,029.80 is: 119,836.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,966.40 : 125,730.90 = 80,029.80 : x
  2. Step 2: Convert to fraction form
    83,966.40/125,730.90 = 80,029.80/x
  3. Step 3: Cross multiply
    83,966.40x = 125,730.90 × 80,029.80
  4. Step 4: Simplify right side
    83,966.40x = 10,062,218,780.82
  5. Step 5: Solve for x
    x = 10,062,218,780.82/83,966.40
  6. Step 6: Final answer
    x = 119,836.25

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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.