Home / 158,531.64-218,768.92-86,909.22

Finding the Fourth Proportional to 158,531.64, 218,768.92 and 86,909.22

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Solution

The fourth proportional to 158,531.64, 218,768.92 and 86,909.22 is: 119,932.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,531.64 : 218,768.92 = 86,909.22 : x
  2. Step 2: Convert to fraction form
    158,531.64/218,768.92 = 86,909.22/x
  3. Step 3: Cross multiply
    158,531.64x = 218,768.92 × 86,909.22
  4. Step 4: Simplify right side
    158,531.64x = 19,013,036,197.44
  5. Step 5: Solve for x
    x = 19,013,036,197.44/158,531.64
  6. Step 6: Final answer
    x = 119,932.12

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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.