Home / 158,971.50-219,380.09-86,373.90

Finding the Fourth Proportional to 158,971.50, 219,380.09 and 86,373.90

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Solution

The fourth proportional to 158,971.50, 219,380.09 and 86,373.90 is: 119,195.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,971.50 : 219,380.09 = 86,373.90 : x
  2. Step 2: Convert to fraction form
    158,971.50/219,380.09 = 86,373.90/x
  3. Step 3: Cross multiply
    158,971.50x = 219,380.09 × 86,373.90
  4. Step 4: Simplify right side
    158,971.50x = 18,948,713,523.78
  5. Step 5: Solve for x
    x = 18,948,713,523.78/158,971.50
  6. Step 6: Final answer
    x = 119,195.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.