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Finding the Fourth Proportional to 101,796.15, 140,331.20 and 71,489.19

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Solution

The fourth proportional to 101,796.15, 140,331.20 and 71,489.19 is: 98,551.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,796.15 : 140,331.20 = 71,489.19 : x
  2. Step 2: Convert to fraction form
    101,796.15/140,331.20 = 71,489.19/x
  3. Step 3: Cross multiply
    101,796.15x = 140,331.20 × 71,489.19
  4. Step 4: Simplify right side
    101,796.15x = 10,032,163,462.28
  5. Step 5: Solve for x
    x = 10,032,163,462.28/101,796.15
  6. Step 6: Final answer
    x = 98,551.50

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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.