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Finding the Fourth Proportional to 100,539.56, 150,809.26 and 25,659.72

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Solution

The fourth proportional to 100,539.56, 150,809.26 and 25,659.72 is: 38,489.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,539.56 : 150,809.26 = 25,659.72 : x
  2. Step 2: Convert to fraction form
    100,539.56/150,809.26 = 25,659.72/x
  3. Step 3: Cross multiply
    100,539.56x = 150,809.26 × 25,659.72
  4. Step 4: Simplify right side
    100,539.56x = 3,869,723,385.01
  5. Step 5: Solve for x
    x = 3,869,723,385.01/100,539.56
  6. Step 6: Final answer
    x = 38,489.56

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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.