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Finding the Fourth Proportional to 181,691.37, 250,713.18 and 105,211.98

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Solution

The fourth proportional to 181,691.37, 250,713.18 and 105,211.98 is: 145,180.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,691.37 : 250,713.18 = 105,211.98 : x
  2. Step 2: Convert to fraction form
    181,691.37/250,713.18 = 105,211.98/x
  3. Step 3: Cross multiply
    181,691.37x = 250,713.18 × 105,211.98
  4. Step 4: Simplify right side
    181,691.37x = 26,378,030,079.90
  5. Step 5: Solve for x
    x = 26,378,030,079.90/181,691.37
  6. Step 6: Final answer
    x = 145,180.42

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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.