Home / 221,531.96-305,710.19-126,036.61

Finding the Fourth Proportional to 221,531.96, 305,710.19 and 126,036.61

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Solution

The fourth proportional to 221,531.96, 305,710.19 and 126,036.61 is: 173,928.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,531.96 : 305,710.19 = 126,036.61 : x
  2. Step 2: Convert to fraction form
    221,531.96/305,710.19 = 126,036.61/x
  3. Step 3: Cross multiply
    221,531.96x = 305,710.19 × 126,036.61
  4. Step 4: Simplify right side
    221,531.96x = 38,530,675,990.06
  5. Step 5: Solve for x
    x = 38,530,675,990.06/221,531.96
  6. Step 6: Final answer
    x = 173,928.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.