Home / 138,585.47-207,889.54-43,822.15

Finding the Fourth Proportional to 138,585.47, 207,889.54 and 43,822.15

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Solution

The fourth proportional to 138,585.47, 207,889.54 and 43,822.15 is: 65,736.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,585.47 : 207,889.54 = 43,822.15 : x
  2. Step 2: Convert to fraction form
    138,585.47/207,889.54 = 43,822.15/x
  3. Step 3: Cross multiply
    138,585.47x = 207,889.54 × 43,822.15
  4. Step 4: Simplify right side
    138,585.47x = 9,110,165,976.03
  5. Step 5: Solve for x
    x = 9,110,165,976.03/138,585.47
  6. Step 6: Final answer
    x = 65,736.81

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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.