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Finding the Fourth Proportional to 171,947.60, 257,844.60 and 66,731.60

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Solution

The fourth proportional to 171,947.60, 257,844.60 and 66,731.60 is: 100,067.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,947.60 : 257,844.60 = 66,731.60 : x
  2. Step 2: Convert to fraction form
    171,947.60/257,844.60 = 66,731.60/x
  3. Step 3: Cross multiply
    171,947.60x = 257,844.60 × 66,731.60
  4. Step 4: Simplify right side
    171,947.60x = 17,206,382,709.36
  5. Step 5: Solve for x
    x = 17,206,382,709.36/171,947.60
  6. Step 6: Final answer
    x = 100,067.59

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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.