Home / 124,979.25-172,471.38-68,390.64

Finding the Fourth Proportional to 124,979.25, 172,471.38 and 68,390.64

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Solution

The fourth proportional to 124,979.25, 172,471.38 and 68,390.64 is: 94,379.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,979.25 : 172,471.38 = 68,390.64 : x
  2. Step 2: Convert to fraction form
    124,979.25/172,471.38 = 68,390.64/x
  3. Step 3: Cross multiply
    124,979.25x = 172,471.38 × 68,390.64
  4. Step 4: Simplify right side
    124,979.25x = 11,795,428,059.88
  5. Step 5: Solve for x
    x = 11,795,428,059.88/124,979.25
  6. Step 6: Final answer
    x = 94,379.09

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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.