Home / 129,972.20-194,861.10-70,874.60

Finding the Fourth Proportional to 129,972.20, 194,861.10 and 70,874.60

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Solution

The fourth proportional to 129,972.20, 194,861.10 and 70,874.60 is: 106,258.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,972.20 : 194,861.10 = 70,874.60 : x
  2. Step 2: Convert to fraction form
    129,972.20/194,861.10 = 70,874.60/x
  3. Step 3: Cross multiply
    129,972.20x = 194,861.10 × 70,874.60
  4. Step 4: Simplify right side
    129,972.20x = 13,810,702,518.06
  5. Step 5: Solve for x
    x = 13,810,702,518.06/129,972.20
  6. Step 6: Final answer
    x = 106,258.90

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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.