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Finding the Fourth Proportional to 158,246.49, 218,380.14 and 86,626.56

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Solution

The fourth proportional to 158,246.49, 218,380.14 and 86,626.56 is: 119,544.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,246.49 : 218,380.14 = 86,626.56 : x
  2. Step 2: Convert to fraction form
    158,246.49/218,380.14 = 86,626.56/x
  3. Step 3: Cross multiply
    158,246.49x = 218,380.14 × 86,626.56
  4. Step 4: Simplify right side
    158,246.49x = 18,917,520,300.52
  5. Step 5: Solve for x
    x = 18,917,520,300.52/158,246.49
  6. Step 6: Final answer
    x = 119,544.64

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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.