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Finding the Fourth Proportional to 158,379.02, 218,563.03 and 86,759.02

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Solution

The fourth proportional to 158,379.02, 218,563.03 and 86,759.02 is: 119,727.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,379.02 : 218,563.03 = 86,759.02 : x
  2. Step 2: Convert to fraction form
    158,379.02/218,563.03 = 86,759.02/x
  3. Step 3: Cross multiply
    158,379.02x = 218,563.03 × 86,759.02
  4. Step 4: Simplify right side
    158,379.02x = 18,962,312,764.42
  5. Step 5: Solve for x
    x = 18,962,312,764.42/158,379.02
  6. Step 6: Final answer
    x = 119,727.43

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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.