Home / 189,631.72-261,711.30-109,062.28

Finding the Fourth Proportional to 189,631.72, 261,711.30 and 109,062.28

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Solution

The fourth proportional to 189,631.72, 261,711.30 and 109,062.28 is: 150,517.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,631.72 : 261,711.30 = 109,062.28 : x
  2. Step 2: Convert to fraction form
    189,631.72/261,711.30 = 109,062.28/x
  3. Step 3: Cross multiply
    189,631.72x = 261,711.30 × 109,062.28
  4. Step 4: Simplify right side
    189,631.72x = 28,542,831,079.76
  5. Step 5: Solve for x
    x = 28,542,831,079.76/189,631.72
  6. Step 6: Final answer
    x = 150,517.18

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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.