Home / 131,805.40-197,708.10-108,185.80

Finding the Fourth Proportional to 131,805.40, 197,708.10 and 108,185.80

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Solution

The fourth proportional to 131,805.40, 197,708.10 and 108,185.80 is: 162,278.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,805.40 : 197,708.10 = 108,185.80 : x
  2. Step 2: Convert to fraction form
    131,805.40/197,708.10 = 108,185.80/x
  3. Step 3: Cross multiply
    131,805.40x = 197,708.10 × 108,185.80
  4. Step 4: Simplify right side
    131,805.40x = 21,389,208,964.98
  5. Step 5: Solve for x
    x = 21,389,208,964.98/131,805.40
  6. Step 6: Final answer
    x = 162,278.70

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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.