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Finding the Fourth Proportional to 109,963.84, 151,704.98 and 66,908.81

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Solution

The fourth proportional to 109,963.84, 151,704.98 and 66,908.81 is: 92,306.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,963.84 : 151,704.98 = 66,908.81 : x
  2. Step 2: Convert to fraction form
    109,963.84/151,704.98 = 66,908.81/x
  3. Step 3: Cross multiply
    109,963.84x = 151,704.98 × 66,908.81
  4. Step 4: Simplify right side
    109,963.84x = 10,150,399,682.87
  5. Step 5: Solve for x
    x = 10,150,399,682.87/109,963.84
  6. Step 6: Final answer
    x = 92,306.70

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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.