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Finding the Fourth Proportional to 149,305.68, 206,250.81 and 103,960.97

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Solution

The fourth proportional to 149,305.68, 206,250.81 and 103,960.97 is: 143,611.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,305.68 : 206,250.81 = 103,960.97 : x
  2. Step 2: Convert to fraction form
    149,305.68/206,250.81 = 103,960.97/x
  3. Step 3: Cross multiply
    149,305.68x = 206,250.81 × 103,960.97
  4. Step 4: Simplify right side
    149,305.68x = 21,442,033,623.22
  5. Step 5: Solve for x
    x = 21,442,033,623.22/149,305.68
  6. Step 6: Final answer
    x = 143,611.64

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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.