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Finding the Fourth Proportional to 103,219.68, 142,448.22 and 60,791.88

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Solution

The fourth proportional to 103,219.68, 142,448.22 and 60,791.88 is: 83,895.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,219.68 : 142,448.22 = 60,791.88 : x
  2. Step 2: Convert to fraction form
    103,219.68/142,448.22 = 60,791.88/x
  3. Step 3: Cross multiply
    103,219.68x = 142,448.22 × 60,791.88
  4. Step 4: Simplify right side
    103,219.68x = 8,659,695,096.45
  5. Step 5: Solve for x
    x = 8,659,695,096.45/103,219.68
  6. Step 6: Final answer
    x = 83,895.78

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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.