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Finding the Fourth Proportional to 103,481.44, 142,912.82 and 71,299.74

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Solution

The fourth proportional to 103,481.44, 142,912.82 and 71,299.74 is: 98,468.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,481.44 : 142,912.82 = 71,299.74 : x
  2. Step 2: Convert to fraction form
    103,481.44/142,912.82 = 71,299.74/x
  3. Step 3: Cross multiply
    103,481.44x = 142,912.82 × 71,299.74
  4. Step 4: Simplify right side
    103,481.44x = 10,189,646,908.67
  5. Step 5: Solve for x
    x = 10,189,646,908.67/103,481.44
  6. Step 6: Final answer
    x = 98,468.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.