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Finding the Fourth Proportional to 147,703.11, 203,829.25 and 80,635.11

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Solution

The fourth proportional to 147,703.11, 203,829.25 and 80,635.11 is: 111,275.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,703.11 : 203,829.25 = 80,635.11 : x
  2. Step 2: Convert to fraction form
    147,703.11/203,829.25 = 80,635.11/x
  3. Step 3: Cross multiply
    147,703.11x = 203,829.25 × 80,635.11
  4. Step 4: Simplify right side
    147,703.11x = 16,435,793,994.97
  5. Step 5: Solve for x
    x = 16,435,793,994.97/147,703.11
  6. Step 6: Final answer
    x = 111,275.88

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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.