Home / 87,308.66-131,012.19-86,641.62

Finding the Fourth Proportional to 87,308.66, 131,012.19 and 86,641.62

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Solution

The fourth proportional to 87,308.66, 131,012.19 and 86,641.62 is: 130,011.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,308.66 : 131,012.19 = 86,641.62 : x
  2. Step 2: Convert to fraction form
    87,308.66/131,012.19 = 86,641.62/x
  3. Step 3: Cross multiply
    87,308.66x = 131,012.19 × 86,641.62
  4. Step 4: Simplify right side
    87,308.66x = 11,351,108,381.35
  5. Step 5: Solve for x
    x = 11,351,108,381.35/87,308.66
  6. Step 6: Final answer
    x = 130,011.26

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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.