Home / 206,654.36-285,317.50-126,128.56

Finding the Fourth Proportional to 206,654.36, 285,317.50 and 126,128.56

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Solution

The fourth proportional to 206,654.36, 285,317.50 and 126,128.56 is: 174,139.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,654.36 : 285,317.50 = 126,128.56 : x
  2. Step 2: Convert to fraction form
    206,654.36/285,317.50 = 126,128.56/x
  3. Step 3: Cross multiply
    206,654.36x = 285,317.50 × 126,128.56
  4. Step 4: Simplify right side
    206,654.36x = 35,986,685,417.80
  5. Step 5: Solve for x
    x = 35,986,685,417.80/206,654.36
  6. Step 6: Final answer
    x = 174,139.49

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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.