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Finding the Fourth Proportional to 147,963.88, 204,190.50 and 80,900.20

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Solution

The fourth proportional to 147,963.88, 204,190.50 and 80,900.20 is: 111,642.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,963.88 : 204,190.50 = 80,900.20 : x
  2. Step 2: Convert to fraction form
    147,963.88/204,190.50 = 80,900.20/x
  3. Step 3: Cross multiply
    147,963.88x = 204,190.50 × 80,900.20
  4. Step 4: Simplify right side
    147,963.88x = 16,519,052,288.10
  5. Step 5: Solve for x
    x = 16,519,052,288.10/147,963.88
  6. Step 6: Final answer
    x = 111,642.46

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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.