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Finding the Fourth Proportional to 172,890.42, 259,452.30 and 67,696.26

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Solution

The fourth proportional to 172,890.42, 259,452.30 and 67,696.26 is: 101,590.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,890.42 : 259,452.30 = 67,696.26 : x
  2. Step 2: Convert to fraction form
    172,890.42/259,452.30 = 67,696.26/x
  3. Step 3: Cross multiply
    172,890.42x = 259,452.30 × 67,696.26
  4. Step 4: Simplify right side
    172,890.42x = 17,563,950,358.40
  5. Step 5: Solve for x
    x = 17,563,950,358.40/172,890.42
  6. Step 6: Final answer
    x = 101,590.07

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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.