Home / 189,741.30-261,835.92-109,181.28

Finding the Fourth Proportional to 189,741.30, 261,835.92 and 109,181.28

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Solution

The fourth proportional to 189,741.30, 261,835.92 and 109,181.28 is: 150,666.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,741.30 : 261,835.92 = 109,181.28 : x
  2. Step 2: Convert to fraction form
    189,741.30/261,835.92 = 109,181.28/x
  3. Step 3: Cross multiply
    189,741.30x = 261,835.92 × 109,181.28
  4. Step 4: Simplify right side
    189,741.30x = 28,587,580,895.58
  5. Step 5: Solve for x
    x = 28,587,580,895.58/189,741.30
  6. Step 6: Final answer
    x = 150,666.10

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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.