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Finding the Fourth Proportional to 171,378.60, 257,067.90 and 101,221.80

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Solution

The fourth proportional to 171,378.60, 257,067.90 and 101,221.80 is: 151,832.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,378.60 : 257,067.90 = 101,221.80 : x
  2. Step 2: Convert to fraction form
    171,378.60/257,067.90 = 101,221.80/x
  3. Step 3: Cross multiply
    171,378.60x = 257,067.90 × 101,221.80
  4. Step 4: Simplify right side
    171,378.60x = 26,020,875,560.22
  5. Step 5: Solve for x
    x = 26,020,875,560.22/171,378.60
  6. Step 6: Final answer
    x = 151,832.70

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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.