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Finding the Fourth Proportional to 117,391.77, 161,747.15 and 79,600.41

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Solution

The fourth proportional to 117,391.77, 161,747.15 and 79,600.41 is: 109,676.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,391.77 : 161,747.15 = 79,600.41 : x
  2. Step 2: Convert to fraction form
    117,391.77/161,747.15 = 79,600.41/x
  3. Step 3: Cross multiply
    117,391.77x = 161,747.15 × 79,600.41
  4. Step 4: Simplify right side
    117,391.77x = 12,875,139,058.33
  5. Step 5: Solve for x
    x = 12,875,139,058.33/117,391.77
  6. Step 6: Final answer
    x = 109,676.68

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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.