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Finding the Fourth Proportional to 131,941.80, 197,540.10 and 102,700.80

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Solution

The fourth proportional to 131,941.80, 197,540.10 and 102,700.80 is: 153,761.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,941.80 : 197,540.10 = 102,700.80 : x
  2. Step 2: Convert to fraction form
    131,941.80/197,540.10 = 102,700.80/x
  3. Step 3: Cross multiply
    131,941.80x = 197,540.10 × 102,700.80
  4. Step 4: Simplify right side
    131,941.80x = 20,287,526,302.08
  5. Step 5: Solve for x
    x = 20,287,526,302.08/131,941.80
  6. Step 6: Final answer
    x = 153,761.18

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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.