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Finding the Fourth Proportional to 158,517.70, 218,754.02 and 86,898.04

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Solution

The fourth proportional to 158,517.70, 218,754.02 and 86,898.04 is: 119,919.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,517.70 : 218,754.02 = 86,898.04 : x
  2. Step 2: Convert to fraction form
    158,517.70/218,754.02 = 86,898.04/x
  3. Step 3: Cross multiply
    158,517.70x = 218,754.02 × 86,898.04
  4. Step 4: Simplify right side
    158,517.70x = 19,009,295,250.48
  5. Step 5: Solve for x
    x = 19,009,295,250.48/158,517.70
  6. Step 6: Final answer
    x = 119,919.07

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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.