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Finding the Fourth Proportional to 134,716.80, 185,910.51 and 74,289.90

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Solution

The fourth proportional to 134,716.80, 185,910.51 and 74,289.90 is: 102,520.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,716.80 : 185,910.51 = 74,289.90 : x
  2. Step 2: Convert to fraction form
    134,716.80/185,910.51 = 74,289.90/x
  3. Step 3: Cross multiply
    134,716.80x = 185,910.51 × 74,289.90
  4. Step 4: Simplify right side
    134,716.80x = 13,811,273,196.85
  5. Step 5: Solve for x
    x = 13,811,273,196.85/134,716.80
  6. Step 6: Final answer
    x = 102,520.79

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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.