Home / 106,418.79-159,732.07-87,887.61

Finding the Fourth Proportional to 106,418.79, 159,732.07 and 87,887.61

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Solution

The fourth proportional to 106,418.79, 159,732.07 and 87,887.61 is: 131,917.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,418.79 : 159,732.07 = 87,887.61 : x
  2. Step 2: Convert to fraction form
    106,418.79/159,732.07 = 87,887.61/x
  3. Step 3: Cross multiply
    106,418.79x = 159,732.07 × 87,887.61
  4. Step 4: Simplify right side
    106,418.79x = 14,038,469,872.65
  5. Step 5: Solve for x
    x = 14,038,469,872.65/106,418.79
  6. Step 6: Final answer
    x = 131,917.21

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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.