Home / 189,749.76-261,909.75-109,234.14

Finding the Fourth Proportional to 189,749.76, 261,909.75 and 109,234.14

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Solution

The fourth proportional to 189,749.76, 261,909.75 and 109,234.14 is: 150,774.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,749.76 : 261,909.75 = 109,234.14 : x
  2. Step 2: Convert to fraction form
    189,749.76/261,909.75 = 109,234.14/x
  3. Step 3: Cross multiply
    189,749.76x = 261,909.75 × 109,234.14
  4. Step 4: Simplify right side
    189,749.76x = 28,609,486,298.87
  5. Step 5: Solve for x
    x = 28,609,486,298.87/189,749.76
  6. Step 6: Final answer
    x = 150,774.82

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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.