Home / 131,021.60-196,532.40-121,398.80

Finding the Fourth Proportional to 131,021.60, 196,532.40 and 121,398.80

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Solution

The fourth proportional to 131,021.60, 196,532.40 and 121,398.80 is: 182,098.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,021.60 : 196,532.40 = 121,398.80 : x
  2. Step 2: Convert to fraction form
    131,021.60/196,532.40 = 121,398.80/x
  3. Step 3: Cross multiply
    131,021.60x = 196,532.40 × 121,398.80
  4. Step 4: Simplify right side
    131,021.60x = 23,858,797,521.12
  5. Step 5: Solve for x
    x = 23,858,797,521.12/131,021.60
  6. Step 6: Final answer
    x = 182,098.20

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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.