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Finding the Fourth Proportional to 131,728.40, 197,009.40 and 110,733.20

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Solution

The fourth proportional to 131,728.40, 197,009.40 and 110,733.20 is: 165,609.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,728.40 : 197,009.40 = 110,733.20 : x
  2. Step 2: Convert to fraction form
    131,728.40/197,009.40 = 110,733.20/x
  3. Step 3: Cross multiply
    131,728.40x = 197,009.40 × 110,733.20
  4. Step 4: Simplify right side
    131,728.40x = 21,815,481,292.08
  5. Step 5: Solve for x
    x = 21,815,481,292.08/131,728.40
  6. Step 6: Final answer
    x = 165,609.55

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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.