Home / 138,474.65-207,628.78-54,134.36

Finding the Fourth Proportional to 138,474.65, 207,628.78 and 54,134.36

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Solution

The fourth proportional to 138,474.65, 207,628.78 and 54,134.36 is: 81,169.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,474.65 : 207,628.78 = 54,134.36 : x
  2. Step 2: Convert to fraction form
    138,474.65/207,628.78 = 54,134.36/x
  3. Step 3: Cross multiply
    138,474.65x = 207,628.78 × 54,134.36
  4. Step 4: Simplify right side
    138,474.65x = 11,239,851,506.62
  5. Step 5: Solve for x
    x = 11,239,851,506.62/138,474.65
  6. Step 6: Final answer
    x = 81,169.02

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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.