Home / 138,619.90-207,952.26-54,334.36

Finding the Fourth Proportional to 138,619.90, 207,952.26 and 54,334.36

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Solution

The fourth proportional to 138,619.90, 207,952.26 and 54,334.36 is: 81,510.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,619.90 : 207,952.26 = 54,334.36 : x
  2. Step 2: Convert to fraction form
    138,619.90/207,952.26 = 54,334.36/x
  3. Step 3: Cross multiply
    138,619.90x = 207,952.26 × 54,334.36
  4. Step 4: Simplify right side
    138,619.90x = 11,298,952,957.65
  5. Step 5: Solve for x
    x = 11,298,952,957.65/138,619.90
  6. Step 6: Final answer
    x = 81,510.32

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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.