Home / 172,556.21-258,616.22-77,685.36

Finding the Fourth Proportional to 172,556.21, 258,616.22 and 77,685.36

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Solution

The fourth proportional to 172,556.21, 258,616.22 and 77,685.36 is: 116,429.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,556.21 : 258,616.22 = 77,685.36 : x
  2. Step 2: Convert to fraction form
    172,556.21/258,616.22 = 77,685.36/x
  3. Step 3: Cross multiply
    172,556.21x = 258,616.22 × 77,685.36
  4. Step 4: Simplify right side
    172,556.21x = 20,090,693,764.11
  5. Step 5: Solve for x
    x = 20,090,693,764.11/172,556.21
  6. Step 6: Final answer
    x = 116,429.85

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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.