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Finding the Fourth Proportional to 109,846.78, 151,530.09 and 66,839.38

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Solution

The fourth proportional to 109,846.78, 151,530.09 and 66,839.38 is: 92,202.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,846.78 : 151,530.09 = 66,839.38 : x
  2. Step 2: Convert to fraction form
    109,846.78/151,530.09 = 66,839.38/x
  3. Step 3: Cross multiply
    109,846.78x = 151,530.09 × 66,839.38
  4. Step 4: Simplify right side
    109,846.78x = 10,128,177,266.94
  5. Step 5: Solve for x
    x = 10,128,177,266.94/109,846.78
  6. Step 6: Final answer
    x = 92,202.77

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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.