Home / 171,561.31-257,057.40-121,392.73

Finding the Fourth Proportional to 171,561.31, 257,057.40 and 121,392.73

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Solution

The fourth proportional to 171,561.31, 257,057.40 and 121,392.73 is: 181,887.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,561.31 : 257,057.40 = 121,392.73 : x
  2. Step 2: Convert to fraction form
    171,561.31/257,057.40 = 121,392.73/x
  3. Step 3: Cross multiply
    171,561.31x = 257,057.40 × 121,392.73
  4. Step 4: Simplify right side
    171,561.31x = 31,204,899,552.70
  5. Step 5: Solve for x
    x = 31,204,899,552.70/171,561.31
  6. Step 6: Final answer
    x = 181,887.74

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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.