Home / 189,234.83-261,132.15-108,605.61

Finding the Fourth Proportional to 189,234.83, 261,132.15 and 108,605.61

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Solution

The fourth proportional to 189,234.83, 261,132.15 and 108,605.61 is: 149,868.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,234.83 : 261,132.15 = 108,605.61 : x
  2. Step 2: Convert to fraction form
    189,234.83/261,132.15 = 108,605.61/x
  3. Step 3: Cross multiply
    189,234.83x = 261,132.15 × 108,605.61
  4. Step 4: Simplify right side
    189,234.83x = 28,360,416,848.63
  5. Step 5: Solve for x
    x = 28,360,416,848.63/189,234.83
  6. Step 6: Final answer
    x = 149,868.90

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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.