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Finding the Fourth Proportional to 129,767.70, 194,651.55 and 128,892.90

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Solution

The fourth proportional to 129,767.70, 194,651.55 and 128,892.90 is: 193,339.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,767.70 : 194,651.55 = 128,892.90 : x
  2. Step 2: Convert to fraction form
    129,767.70/194,651.55 = 128,892.90/x
  3. Step 3: Cross multiply
    129,767.70x = 194,651.55 × 128,892.90
  4. Step 4: Simplify right side
    129,767.70x = 25,089,202,769.00
  5. Step 5: Solve for x
    x = 25,089,202,769.00/129,767.70
  6. Step 6: Final answer
    x = 193,339.35

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1.5x scale

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.