Home / 87,215.60-131,111.40-75,810.80

Finding the Fourth Proportional to 87,215.60, 131,111.40 and 75,810.80

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Solution

The fourth proportional to 87,215.60, 131,111.40 and 75,810.80 is: 113,966.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,215.60 : 131,111.40 = 75,810.80 : x
  2. Step 2: Convert to fraction form
    87,215.60/131,111.40 = 75,810.80/x
  3. Step 3: Cross multiply
    87,215.60x = 131,111.40 × 75,810.80
  4. Step 4: Simplify right side
    87,215.60x = 9,939,660,123.12
  5. Step 5: Solve for x
    x = 9,939,660,123.12/87,215.60
  6. Step 6: Final answer
    x = 113,966.54

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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.