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Finding the Fourth Proportional to 155,912.70, 233,937.90 and 75,906.30

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Solution

The fourth proportional to 155,912.70, 233,937.90 and 75,906.30 is: 113,892.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,912.70 : 233,937.90 = 75,906.30 : x
  2. Step 2: Convert to fraction form
    155,912.70/233,937.90 = 75,906.30/x
  3. Step 3: Cross multiply
    155,912.70x = 233,937.90 × 75,906.30
  4. Step 4: Simplify right side
    155,912.70x = 17,757,360,418.77
  5. Step 5: Solve for x
    x = 17,757,360,418.77/155,912.70
  6. Step 6: Final answer
    x = 113,892.97

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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.