Home / 129,176.70-193,546.35-84,780.60

Finding the Fourth Proportional to 129,176.70, 193,546.35 and 84,780.60

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Solution

The fourth proportional to 129,176.70, 193,546.35 and 84,780.60 is: 127,027.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,176.70 : 193,546.35 = 84,780.60 : x
  2. Step 2: Convert to fraction form
    129,176.70/193,546.35 = 84,780.60/x
  3. Step 3: Cross multiply
    129,176.70x = 193,546.35 × 84,780.60
  4. Step 4: Simplify right side
    129,176.70x = 16,408,975,680.81
  5. Step 5: Solve for x
    x = 16,408,975,680.81/129,176.70
  6. Step 6: Final answer
    x = 127,027.36

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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.