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Finding the Fourth Proportional to 147,906.80, 221,605.05 and 68,858.90

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Solution

The fourth proportional to 147,906.80, 221,605.05 and 68,858.90 is: 103,169.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,906.80 : 221,605.05 = 68,858.90 : x
  2. Step 2: Convert to fraction form
    147,906.80/221,605.05 = 68,858.90/x
  3. Step 3: Cross multiply
    147,906.80x = 221,605.05 × 68,858.90
  4. Step 4: Simplify right side
    147,906.80x = 15,259,479,977.45
  5. Step 5: Solve for x
    x = 15,259,479,977.45/147,906.80
  6. Step 6: Final answer
    x = 103,169.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.