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Finding the Fourth Proportional to 101,356.65, 139,876.11 and 67,306.41

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Solution

The fourth proportional to 101,356.65, 139,876.11 and 67,306.41 is: 92,885.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,356.65 : 139,876.11 = 67,306.41 : x
  2. Step 2: Convert to fraction form
    101,356.65/139,876.11 = 67,306.41/x
  3. Step 3: Cross multiply
    101,356.65x = 139,876.11 × 67,306.41
  4. Step 4: Simplify right side
    101,356.65x = 9,414,558,808.87
  5. Step 5: Solve for x
    x = 9,414,558,808.87/101,356.65
  6. Step 6: Final answer
    x = 92,885.46

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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.