Home / 106,515.90-159,579.45-86,687.10

Finding the Fourth Proportional to 106,515.90, 159,579.45 and 86,687.10

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Solution

The fourth proportional to 106,515.90, 159,579.45 and 86,687.10 is: 129,872.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,515.90 : 159,579.45 = 86,687.10 : x
  2. Step 2: Convert to fraction form
    106,515.90/159,579.45 = 86,687.10/x
  3. Step 3: Cross multiply
    106,515.90x = 159,579.45 × 86,687.10
  4. Step 4: Simplify right side
    106,515.90x = 13,833,479,740.10
  5. Step 5: Solve for x
    x = 13,833,479,740.10/106,515.90
  6. Step 6: Final answer
    x = 129,872.44

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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.