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Finding the Fourth Proportional to 131,449.88, 197,292 and 61,368.68

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Solution

The fourth proportional to 131,449.88, 197,292 and 61,368.68 is: 92,107.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,449.88 : 197,292 = 61,368.68 : x
  2. Step 2: Convert to fraction form
    131,449.88/197,292 = 61,368.68/x
  3. Step 3: Cross multiply
    131,449.88x = 197,292 × 61,368.68
  4. Step 4: Simplify right side
    131,449.88x = 12,107,549,614.56
  5. Step 5: Solve for x
    x = 12,107,549,614.56/131,449.88
  6. Step 6: Final answer
    x = 92,107.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.