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Finding the Fourth Proportional to 173,107.68, 258,978.25 and 131,108.77

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Solution

The fourth proportional to 173,107.68, 258,978.25 and 131,108.77 is: 196,145.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,107.68 : 258,978.25 = 131,108.77 : x
  2. Step 2: Convert to fraction form
    173,107.68/258,978.25 = 131,108.77/x
  3. Step 3: Cross multiply
    173,107.68x = 258,978.25 × 131,108.77
  4. Step 4: Simplify right side
    173,107.68x = 33,954,319,814.25
  5. Step 5: Solve for x
    x = 33,954,319,814.25/173,107.68
  6. Step 6: Final answer
    x = 196,145.66

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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.