Home / 221,531.60-332,081.40-126,664.40

Finding the Fourth Proportional to 221,531.60, 332,081.40 and 126,664.40

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Solution

The fourth proportional to 221,531.60, 332,081.40 and 126,664.40 is: 189,873.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,531.60 : 332,081.40 = 126,664.40 : x
  2. Step 2: Convert to fraction form
    221,531.60/332,081.40 = 126,664.40/x
  3. Step 3: Cross multiply
    221,531.60x = 332,081.40 × 126,664.40
  4. Step 4: Simplify right side
    221,531.60x = 42,062,891,282.16
  5. Step 5: Solve for x
    x = 42,062,891,282.16/221,531.60
  6. Step 6: Final answer
    x = 189,873.10

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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.