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Finding the Fourth Proportional to 172,746.69, 259,120.05 and 67,491.87

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Solution

The fourth proportional to 172,746.69, 259,120.05 and 67,491.87 is: 101,237.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,746.69 : 259,120.05 = 67,491.87 : x
  2. Step 2: Convert to fraction form
    172,746.69/259,120.05 = 67,491.87/x
  3. Step 3: Cross multiply
    172,746.69x = 259,120.05 × 67,491.87
  4. Step 4: Simplify right side
    172,746.69x = 17,488,496,728.99
  5. Step 5: Solve for x
    x = 17,488,496,728.99/172,746.69
  6. Step 6: Final answer
    x = 101,237.81

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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.