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Finding the Fourth Proportional to 131,447.80, 197,171.70 and 115,895.80

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Solution

The fourth proportional to 131,447.80, 197,171.70 and 115,895.80 is: 173,843.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,447.80 : 197,171.70 = 115,895.80 : x
  2. Step 2: Convert to fraction form
    131,447.80/197,171.70 = 115,895.80/x
  3. Step 3: Cross multiply
    131,447.80x = 197,171.70 × 115,895.80
  4. Step 4: Simplify right side
    131,447.80x = 22,851,371,908.86
  5. Step 5: Solve for x
    x = 22,851,371,908.86/131,447.80
  6. Step 6: Final answer
    x = 173,843.70

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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.