Home / 205,731.90-283,900.14-129,290.58

Finding the Fourth Proportional to 205,731.90, 283,900.14 and 129,290.58

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Solution

The fourth proportional to 205,731.90, 283,900.14 and 129,290.58 is: 178,414.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,731.90 : 283,900.14 = 129,290.58 : x
  2. Step 2: Convert to fraction form
    205,731.90/283,900.14 = 129,290.58/x
  3. Step 3: Cross multiply
    205,731.90x = 283,900.14 × 129,290.58
  4. Step 4: Simplify right side
    205,731.90x = 36,705,613,762.68
  5. Step 5: Solve for x
    x = 36,705,613,762.68/205,731.90
  6. Step 6: Final answer
    x = 178,414.79

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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.