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Finding the Fourth Proportional to 158,488.08, 218,712.25 and 86,867.94

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Solution

The fourth proportional to 158,488.08, 218,712.25 and 86,867.94 is: 119,877.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,488.08 : 218,712.25 = 86,867.94 : x
  2. Step 2: Convert to fraction form
    158,488.08/218,712.25 = 86,867.94/x
  3. Step 3: Cross multiply
    158,488.08x = 218,712.25 × 86,867.94
  4. Step 4: Simplify right side
    158,488.08x = 18,999,082,610.27
  5. Step 5: Solve for x
    x = 18,999,082,610.27/158,488.08
  6. Step 6: Final answer
    x = 119,877.04

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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.