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Finding the Fourth Proportional to 172,176.57, 258,291.54 and 87,891.03

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Solution

The fourth proportional to 172,176.57, 258,291.54 and 87,891.03 is: 131,850.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,176.57 : 258,291.54 = 87,891.03 : x
  2. Step 2: Convert to fraction form
    172,176.57/258,291.54 = 87,891.03/x
  3. Step 3: Cross multiply
    172,176.57x = 258,291.54 × 87,891.03
  4. Step 4: Simplify right side
    172,176.57x = 22,701,509,490.89
  5. Step 5: Solve for x
    x = 22,701,509,490.89/172,176.57
  6. Step 6: Final answer
    x = 131,850.17

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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.