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Finding the Fourth Proportional to 172,876.46, 259,166.78 and 66,336.87

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Solution

The fourth proportional to 172,876.46, 259,166.78 and 66,336.87 is: 99,448.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,876.46 : 259,166.78 = 66,336.87 : x
  2. Step 2: Convert to fraction form
    172,876.46/259,166.78 = 66,336.87/x
  3. Step 3: Cross multiply
    172,876.46x = 259,166.78 × 66,336.87
  4. Step 4: Simplify right side
    172,876.46x = 17,192,312,661.49
  5. Step 5: Solve for x
    x = 17,192,312,661.49/172,876.46
  6. Step 6: Final answer
    x = 99,448.55

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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.