Home / 103,499.28-142,825.68-63,198.48

Finding the Fourth Proportional to 103,499.28, 142,825.68 and 63,198.48

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Solution

The fourth proportional to 103,499.28, 142,825.68 and 63,198.48 is: 87,211.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,499.28 : 142,825.68 = 63,198.48 : x
  2. Step 2: Convert to fraction form
    103,499.28/142,825.68 = 63,198.48/x
  3. Step 3: Cross multiply
    103,499.28x = 142,825.68 × 63,198.48
  4. Step 4: Simplify right side
    103,499.28x = 9,026,365,880.97
  5. Step 5: Solve for x
    x = 9,026,365,880.97/103,499.28
  6. Step 6: Final answer
    x = 87,211.87

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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.