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Finding the Fourth Proportional to 158,248.64, 218,383.49 and 86,633.28

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Solution

The fourth proportional to 158,248.64, 218,383.49 and 86,633.28 is: 119,554.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,248.64 : 218,383.49 = 86,633.28 : x
  2. Step 2: Convert to fraction form
    158,248.64/218,383.49 = 86,633.28/x
  3. Step 3: Cross multiply
    158,248.64x = 218,383.49 × 86,633.28
  4. Step 4: Simplify right side
    158,248.64x = 18,919,278,253.13
  5. Step 5: Solve for x
    x = 18,919,278,253.13/158,248.64
  6. Step 6: Final answer
    x = 119,554.13

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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.