Home / 172,275.12-258,478.56-67,167.36

Finding the Fourth Proportional to 172,275.12, 258,478.56 and 67,167.36

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Solution

The fourth proportional to 172,275.12, 258,478.56 and 67,167.36 is: 100,776.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,275.12 : 258,478.56 = 67,167.36 : x
  2. Step 2: Convert to fraction form
    172,275.12/258,478.56 = 67,167.36/x
  3. Step 3: Cross multiply
    172,275.12x = 258,478.56 × 67,167.36
  4. Step 4: Simplify right side
    172,275.12x = 17,361,322,491.80
  5. Step 5: Solve for x
    x = 17,361,322,491.80/172,275.12
  6. Step 6: Final answer
    x = 100,776.73

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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.