Home / 87,653.40-131,480.10-86,731.80

Finding the Fourth Proportional to 87,653.40, 131,480.10 and 86,731.80

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Solution

The fourth proportional to 87,653.40, 131,480.10 and 86,731.80 is: 130,097.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,653.40 : 131,480.10 = 86,731.80 : x
  2. Step 2: Convert to fraction form
    87,653.40/131,480.10 = 86,731.80/x
  3. Step 3: Cross multiply
    87,653.40x = 131,480.10 × 86,731.80
  4. Step 4: Simplify right side
    87,653.40x = 11,403,505,737.18
  5. Step 5: Solve for x
    x = 11,403,505,737.18/87,653.40
  6. Step 6: Final answer
    x = 130,097.70

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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.