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Finding the Fourth Proportional to 101,840.96, 140,436.96 and 67,839.68

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Solution

The fourth proportional to 101,840.96, 140,436.96 and 67,839.68 is: 93,549.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,840.96 : 140,436.96 = 67,839.68 : x
  2. Step 2: Convert to fraction form
    101,840.96/140,436.96 = 67,839.68/x
  3. Step 3: Cross multiply
    101,840.96x = 140,436.96 × 67,839.68
  4. Step 4: Simplify right side
    101,840.96x = 9,527,198,426.57
  5. Step 5: Solve for x
    x = 9,527,198,426.57/101,840.96
  6. Step 6: Final answer
    x = 93,549.77

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1.5x scale

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.