Home / 138,127.20-207,145.44-43,357.20

Finding the Fourth Proportional to 138,127.20, 207,145.44 and 43,357.20

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Solution

The fourth proportional to 138,127.20, 207,145.44 and 43,357.20 is: 65,021.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,127.20 : 207,145.44 = 43,357.20 : x
  2. Step 2: Convert to fraction form
    138,127.20/207,145.44 = 43,357.20/x
  3. Step 3: Cross multiply
    138,127.20x = 207,145.44 × 43,357.20
  4. Step 4: Simplify right side
    138,127.20x = 8,981,246,271.17
  5. Step 5: Solve for x
    x = 8,981,246,271.17/138,127.20
  6. Step 6: Final answer
    x = 65,021.56

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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.