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Finding the Fourth Proportional to 129,777, 179,092.44 and 70,161

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Solution

The fourth proportional to 129,777, 179,092.44 and 70,161 is: 96,822.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,777 : 179,092.44 = 70,161 : x
  2. Step 2: Convert to fraction form
    129,777/179,092.44 = 70,161/x
  3. Step 3: Cross multiply
    129,777x = 179,092.44 × 70,161
  4. Step 4: Simplify right side
    129,777x = 12,565,304,682.84
  5. Step 5: Solve for x
    x = 12,565,304,682.84/129,777
  6. Step 6: Final answer
    x = 96,822.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.