Home / 115,273.91-172,988.57-40,394.72

Finding the Fourth Proportional to 115,273.91, 172,988.57 and 40,394.72

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Solution

The fourth proportional to 115,273.91, 172,988.57 and 40,394.72 is: 60,619.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,273.91 : 172,988.57 = 40,394.72 : x
  2. Step 2: Convert to fraction form
    115,273.91/172,988.57 = 40,394.72/x
  3. Step 3: Cross multiply
    115,273.91x = 172,988.57 × 40,394.72
  4. Step 4: Simplify right side
    115,273.91x = 6,987,825,078.85
  5. Step 5: Solve for x
    x = 6,987,825,078.85/115,273.91
  6. Step 6: Final answer
    x = 60,619.31

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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.