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Finding the Fourth Proportional to 189,015.92, 260,833.92 and 108,387.44

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Solution

The fourth proportional to 189,015.92, 260,833.92 and 108,387.44 is: 149,570.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,015.92 : 260,833.92 = 108,387.44 : x
  2. Step 2: Convert to fraction form
    189,015.92/260,833.92 = 108,387.44/x
  3. Step 3: Cross multiply
    189,015.92x = 260,833.92 × 108,387.44
  4. Step 4: Simplify right side
    189,015.92x = 28,271,120,853.96
  5. Step 5: Solve for x
    x = 28,271,120,853.96/189,015.92
  6. Step 6: Final answer
    x = 149,570.05

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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.