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Finding the Fourth Proportional to 163,638.56, 225,822.53 and 91,042.52

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Solution

The fourth proportional to 163,638.56, 225,822.53 and 91,042.52 is: 125,639.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,638.56 : 225,822.53 = 91,042.52 : x
  2. Step 2: Convert to fraction form
    163,638.56/225,822.53 = 91,042.52/x
  3. Step 3: Cross multiply
    163,638.56x = 225,822.53 × 91,042.52
  4. Step 4: Simplify right side
    163,638.56x = 20,559,451,302.47
  5. Step 5: Solve for x
    x = 20,559,451,302.47/163,638.56
  6. Step 6: Final answer
    x = 125,639.40

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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.