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Finding the Fourth Proportional to 138,034.84, 207,100.86 and 67,963.36

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Solution

The fourth proportional to 138,034.84, 207,100.86 and 67,963.36 is: 101,968.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,034.84 : 207,100.86 = 67,963.36 : x
  2. Step 2: Convert to fraction form
    138,034.84/207,100.86 = 67,963.36/x
  3. Step 3: Cross multiply
    138,034.84x = 207,100.86 × 67,963.36
  4. Step 4: Simplify right side
    138,034.84x = 14,075,270,304.49
  5. Step 5: Solve for x
    x = 14,075,270,304.49/138,034.84
  6. Step 6: Final answer
    x = 101,968.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.