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Finding the Fourth Proportional to 163,639.38, 225,820.92 and 92,017.88

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Solution

The fourth proportional to 163,639.38, 225,820.92 and 92,017.88 is: 126,983.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,639.38 : 225,820.92 = 92,017.88 : x
  2. Step 2: Convert to fraction form
    163,639.38/225,820.92 = 92,017.88/x
  3. Step 3: Cross multiply
    163,639.38x = 225,820.92 × 92,017.88
  4. Step 4: Simplify right side
    163,639.38x = 20,779,562,318.05
  5. Step 5: Solve for x
    x = 20,779,562,318.05/163,639.38
  6. Step 6: Final answer
    x = 126,983.87

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1.5x scale

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.