Home / 171,426.15-257,180.30-71,530.79

Finding the Fourth Proportional to 171,426.15, 257,180.30 and 71,530.79

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Solution

The fourth proportional to 171,426.15, 257,180.30 and 71,530.79 is: 107,313.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,426.15 : 257,180.30 = 71,530.79 : x
  2. Step 2: Convert to fraction form
    171,426.15/257,180.30 = 71,530.79/x
  3. Step 3: Cross multiply
    171,426.15x = 257,180.30 × 71,530.79
  4. Step 4: Simplify right side
    171,426.15x = 18,396,308,387.88
  5. Step 5: Solve for x
    x = 18,396,308,387.88/171,426.15
  6. Step 6: Final answer
    x = 107,313.31

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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.