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Finding the Fourth Proportional to 101,628.14, 140,270.13 and 67,638.02

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Solution

The fourth proportional to 101,628.14, 140,270.13 and 67,638.02 is: 93,355.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,628.14 : 140,270.13 = 67,638.02 : x
  2. Step 2: Convert to fraction form
    101,628.14/140,270.13 = 67,638.02/x
  3. Step 3: Cross multiply
    101,628.14x = 140,270.13 × 67,638.02
  4. Step 4: Simplify right side
    101,628.14x = 9,487,593,156.99
  5. Step 5: Solve for x
    x = 9,487,593,156.99/101,628.14
  6. Step 6: Final answer
    x = 93,355.97

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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.