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Finding the Fourth Proportional to 158,601.45, 218,870.03 and 86,982.97

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Solution

The fourth proportional to 158,601.45, 218,870.03 and 86,982.97 is: 120,036.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,601.45 : 218,870.03 = 86,982.97 : x
  2. Step 2: Convert to fraction form
    158,601.45/218,870.03 = 86,982.97/x
  3. Step 3: Cross multiply
    158,601.45x = 218,870.03 × 86,982.97
  4. Step 4: Simplify right side
    158,601.45x = 19,037,965,253.39
  5. Step 5: Solve for x
    x = 19,037,965,253.39/158,601.45
  6. Step 6: Final answer
    x = 120,036.51

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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.