Home / 206,981.40-285,660.74-126,391.96

Finding the Fourth Proportional to 206,981.40, 285,660.74 and 126,391.96

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Solution

The fourth proportional to 206,981.40, 285,660.74 and 126,391.96 is: 174,437.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,981.40 : 285,660.74 = 126,391.96 : x
  2. Step 2: Convert to fraction form
    206,981.40/285,660.74 = 126,391.96/x
  3. Step 3: Cross multiply
    206,981.40x = 285,660.74 × 126,391.96
  4. Step 4: Simplify right side
    206,981.40x = 36,105,220,823.65
  5. Step 5: Solve for x
    x = 36,105,220,823.65/206,981.40
  6. Step 6: Final answer
    x = 174,437.03

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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.