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Finding the Fourth Proportional to 163,640.56, 225,825.29 and 91,044.52

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Solution

The fourth proportional to 163,640.56, 225,825.29 and 91,044.52 is: 125,642.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,640.56 : 225,825.29 = 91,044.52 : x
  2. Step 2: Convert to fraction form
    163,640.56/225,825.29 = 91,044.52/x
  3. Step 3: Cross multiply
    163,640.56x = 225,825.29 × 91,044.52
  4. Step 4: Simplify right side
    163,640.56x = 20,560,155,131.91
  5. Step 5: Solve for x
    x = 20,560,155,131.91/163,640.56
  6. Step 6: Final answer
    x = 125,642.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.