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Finding the Fourth Proportional to 101,768.79, 140,489.15 and 67,833.84

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Solution

The fourth proportional to 101,768.79, 140,489.15 and 67,833.84 is: 93,642.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,768.79 : 140,489.15 = 67,833.84 : x
  2. Step 2: Convert to fraction form
    101,768.79/140,489.15 = 67,833.84/x
  3. Step 3: Cross multiply
    101,768.79x = 140,489.15 × 67,833.84
  4. Step 4: Simplify right side
    101,768.79x = 9,529,918,522.84
  5. Step 5: Solve for x
    x = 9,529,918,522.84/101,768.79
  6. Step 6: Final answer
    x = 93,642.84

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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.