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Finding the Fourth Proportional to 158,234.46, 218,363.80 and 86,619.02

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Solution

The fourth proportional to 158,234.46, 218,363.80 and 86,619.02 is: 119,534.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,234.46 : 218,363.80 = 86,619.02 : x
  2. Step 2: Convert to fraction form
    158,234.46/218,363.80 = 86,619.02/x
  3. Step 3: Cross multiply
    158,234.46x = 218,363.80 × 86,619.02
  4. Step 4: Simplify right side
    158,234.46x = 18,914,458,359.48
  5. Step 5: Solve for x
    x = 18,914,458,359.48/158,234.46
  6. Step 6: Final answer
    x = 119,534.38

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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.