Home / 172,730.45-259,131.04-72,890.66

Finding the Fourth Proportional to 172,730.45, 259,131.04 and 72,890.66

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Solution

The fourth proportional to 172,730.45, 259,131.04 and 72,890.66 is: 109,350.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,730.45 : 259,131.04 = 72,890.66 : x
  2. Step 2: Convert to fraction form
    172,730.45/259,131.04 = 72,890.66/x
  3. Step 3: Cross multiply
    172,730.45x = 259,131.04 × 72,890.66
  4. Step 4: Simplify right side
    172,730.45x = 18,888,231,054.20
  5. Step 5: Solve for x
    x = 18,888,231,054.20/172,730.45
  6. Step 6: Final answer
    x = 109,350.91

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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.