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Finding the Fourth Proportional to 131,017.80, 196,613.10 and 47,911.80

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Solution

The fourth proportional to 131,017.80, 196,613.10 and 47,911.80 is: 71,899.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,017.80 : 196,613.10 = 47,911.80 : x
  2. Step 2: Convert to fraction form
    131,017.80/196,613.10 = 47,911.80/x
  3. Step 3: Cross multiply
    131,017.80x = 196,613.10 × 47,911.80
  4. Step 4: Simplify right side
    131,017.80x = 9,420,087,524.58
  5. Step 5: Solve for x
    x = 9,420,087,524.58/131,017.80
  6. Step 6: Final answer
    x = 71,899.30

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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.