Home / 86,876.20-130,314.30-82,037.80

Finding the Fourth Proportional to 86,876.20, 130,314.30 and 82,037.80

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Solution

The fourth proportional to 86,876.20, 130,314.30 and 82,037.80 is: 123,056.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,876.20 : 130,314.30 = 82,037.80 : x
  2. Step 2: Convert to fraction form
    86,876.20/130,314.30 = 82,037.80/x
  3. Step 3: Cross multiply
    86,876.20x = 130,314.30 × 82,037.80
  4. Step 4: Simplify right side
    86,876.20x = 10,690,698,480.54
  5. Step 5: Solve for x
    x = 10,690,698,480.54/86,876.20
  6. Step 6: Final answer
    x = 123,056.70

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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.