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Finding the Fourth Proportional to 158,367.54, 218,539.44 and 86,747.88

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Solution

The fourth proportional to 158,367.54, 218,539.44 and 86,747.88 is: 119,707.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,367.54 : 218,539.44 = 86,747.88 : x
  2. Step 2: Convert to fraction form
    158,367.54/218,539.44 = 86,747.88/x
  3. Step 3: Cross multiply
    158,367.54x = 218,539.44 × 86,747.88
  4. Step 4: Simplify right side
    158,367.54x = 18,957,833,116.39
  5. Step 5: Solve for x
    x = 18,957,833,116.39/158,367.54
  6. Step 6: Final answer
    x = 119,707.82

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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.