Home / 129,912.20-194,771.10-70,814.60

Finding the Fourth Proportional to 129,912.20, 194,771.10 and 70,814.60

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Solution

The fourth proportional to 129,912.20, 194,771.10 and 70,814.60 is: 106,168.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,912.20 : 194,771.10 = 70,814.60 : x
  2. Step 2: Convert to fraction form
    129,912.20/194,771.10 = 70,814.60/x
  3. Step 3: Cross multiply
    129,912.20x = 194,771.10 × 70,814.60
  4. Step 4: Simplify right side
    129,912.20x = 13,792,637,538.06
  5. Step 5: Solve for x
    x = 13,792,637,538.06/129,912.20
  6. Step 6: Final answer
    x = 106,168.92

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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.