Home / 158,339.75-218,502.97-86,720.36

Finding the Fourth Proportional to 158,339.75, 218,502.97 and 86,720.36

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Solution

The fourth proportional to 158,339.75, 218,502.97 and 86,720.36 is: 119,670.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,339.75 : 218,502.97 = 86,720.36 : x
  2. Step 2: Convert to fraction form
    158,339.75/218,502.97 = 86,720.36/x
  3. Step 3: Cross multiply
    158,339.75x = 218,502.97 × 86,720.36
  4. Step 4: Simplify right side
    158,339.75x = 18,948,654,910.15
  5. Step 5: Solve for x
    x = 18,948,654,910.15/158,339.75
  6. Step 6: Final answer
    x = 119,670.87

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1.5x scale

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.