Home / 171,780.20-257,545.71-115,480.65

Finding the Fourth Proportional to 171,780.20, 257,545.71 and 115,480.65

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Solution

The fourth proportional to 171,780.20, 257,545.71 and 115,480.65 is: 173,137.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,780.20 : 257,545.71 = 115,480.65 : x
  2. Step 2: Convert to fraction form
    171,780.20/257,545.71 = 115,480.65/x
  3. Step 3: Cross multiply
    171,780.20x = 257,545.71 × 115,480.65
  4. Step 4: Simplify right side
    171,780.20x = 29,741,545,995.51
  5. Step 5: Solve for x
    x = 29,741,545,995.51/171,780.20
  6. Step 6: Final answer
    x = 173,137.22

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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.