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Finding the Fourth Proportional to 135,642.78, 203,480.51 and 65,472.75

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Solution

The fourth proportional to 135,642.78, 203,480.51 and 65,472.75 is: 98,217.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,642.78 : 203,480.51 = 65,472.75 : x
  2. Step 2: Convert to fraction form
    135,642.78/203,480.51 = 65,472.75/x
  3. Step 3: Cross multiply
    135,642.78x = 203,480.51 × 65,472.75
  4. Step 4: Simplify right side
    135,642.78x = 13,322,428,233.74
  5. Step 5: Solve for x
    x = 13,322,428,233.74/135,642.78
  6. Step 6: Final answer
    x = 98,217.01

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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.