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Finding the Fourth Proportional to 101,950.65, 140,687.01 and 56,631.56

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Solution

The fourth proportional to 101,950.65, 140,687.01 and 56,631.56 is: 78,148.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,950.65 : 140,687.01 = 56,631.56 : x
  2. Step 2: Convert to fraction form
    101,950.65/140,687.01 = 56,631.56/x
  3. Step 3: Cross multiply
    101,950.65x = 140,687.01 × 56,631.56
  4. Step 4: Simplify right side
    101,950.65x = 7,967,324,144.60
  5. Step 5: Solve for x
    x = 7,967,324,144.60/101,950.65
  6. Step 6: Final answer
    x = 78,148.83

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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.