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Finding the Fourth Proportional to 158,530.03, 218,770.65 and 85,932.65

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Solution

The fourth proportional to 158,530.03, 218,770.65 and 85,932.65 is: 118,586.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,530.03 : 218,770.65 = 85,932.65 : x
  2. Step 2: Convert to fraction form
    158,530.03/218,770.65 = 85,932.65/x
  3. Step 3: Cross multiply
    158,530.03x = 218,770.65 × 85,932.65
  4. Step 4: Simplify right side
    158,530.03x = 18,799,542,243.65
  5. Step 5: Solve for x
    x = 18,799,542,243.65/158,530.03
  6. Step 6: Final answer
    x = 118,586.63

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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.