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Finding the Fourth Proportional to 173,669.80, 260,067.30 and 138,677.80

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Solution

The fourth proportional to 173,669.80, 260,067.30 and 138,677.80 is: 207,667.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,669.80 : 260,067.30 = 138,677.80 : x
  2. Step 2: Convert to fraction form
    173,669.80/260,067.30 = 138,677.80/x
  3. Step 3: Cross multiply
    173,669.80x = 260,067.30 × 138,677.80
  4. Step 4: Simplify right side
    173,669.80x = 36,065,561,015.94
  5. Step 5: Solve for x
    x = 36,065,561,015.94/173,669.80
  6. Step 6: Final answer
    x = 207,667.43

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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.