Home / 189,138.96-261,035.40-108,591.72

Finding the Fourth Proportional to 189,138.96, 261,035.40 and 108,591.72

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Solution

The fourth proportional to 189,138.96, 261,035.40 and 108,591.72 is: 149,870.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,138.96 : 261,035.40 = 108,591.72 : x
  2. Step 2: Convert to fraction form
    189,138.96/261,035.40 = 108,591.72/x
  3. Step 3: Cross multiply
    189,138.96x = 261,035.40 × 108,591.72
  4. Step 4: Simplify right side
    189,138.96x = 28,346,283,066.89
  5. Step 5: Solve for x
    x = 28,346,283,066.89/189,138.96
  6. Step 6: Final answer
    x = 149,870.14

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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.