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Finding the Fourth Proportional to 158,474.98, 218,719.56 and 101,139.04

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Solution

The fourth proportional to 158,474.98, 218,719.56 and 101,139.04 is: 139,587.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,474.98 : 218,719.56 = 101,139.04 : x
  2. Step 2: Convert to fraction form
    158,474.98/218,719.56 = 101,139.04/x
  3. Step 3: Cross multiply
    158,474.98x = 218,719.56 × 101,139.04
  4. Step 4: Simplify right side
    158,474.98x = 22,121,086,327.62
  5. Step 5: Solve for x
    x = 22,121,086,327.62/158,474.98
  6. Step 6: Final answer
    x = 139,587.25

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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.