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Finding the Fourth Proportional to 136,898.74, 204,848.54 and 80,765.74

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Solution

The fourth proportional to 136,898.74, 204,848.54 and 80,765.74 is: 120,853.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,898.74 : 204,848.54 = 80,765.74 : x
  2. Step 2: Convert to fraction form
    136,898.74/204,848.54 = 80,765.74/x
  3. Step 3: Cross multiply
    136,898.74x = 204,848.54 × 80,765.74
  4. Step 4: Simplify right side
    136,898.74x = 16,544,744,530.43
  5. Step 5: Solve for x
    x = 16,544,744,530.43/136,898.74
  6. Step 6: Final answer
    x = 120,853.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.