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Finding the Fourth Proportional to 87,992.60, 131,729.70 and 82,866.20

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Solution

The fourth proportional to 87,992.60, 131,729.70 and 82,866.20 is: 124,055.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,992.60 : 131,729.70 = 82,866.20 : x
  2. Step 2: Convert to fraction form
    87,992.60/131,729.70 = 82,866.20/x
  3. Step 3: Cross multiply
    87,992.60x = 131,729.70 × 82,866.20
  4. Step 4: Simplify right side
    87,992.60x = 10,915,939,666.14
  5. Step 5: Solve for x
    x = 10,915,939,666.14/87,992.60
  6. Step 6: Final answer
    x = 124,055.20

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1.5x scale

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.