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Finding the Fourth Proportional to 101,249.58, 139,732.70 and 58,242.98

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Solution

The fourth proportional to 101,249.58, 139,732.70 and 58,242.98 is: 80,380.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,249.58 : 139,732.70 = 58,242.98 : x
  2. Step 2: Convert to fraction form
    101,249.58/139,732.70 = 58,242.98/x
  3. Step 3: Cross multiply
    101,249.58x = 139,732.70 × 58,242.98
  4. Step 4: Simplify right side
    101,249.58x = 8,138,447,861.57
  5. Step 5: Solve for x
    x = 8,138,447,861.57/101,249.58
  6. Step 6: Final answer
    x = 80,380.07

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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.