Home / 120,845.86-166,767.20-67,135.90

Finding the Fourth Proportional to 120,845.86, 166,767.20 and 67,135.90

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Solution

The fourth proportional to 120,845.86, 166,767.20 and 67,135.90 is: 92,647.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,845.86 : 166,767.20 = 67,135.90 : x
  2. Step 2: Convert to fraction form
    120,845.86/166,767.20 = 67,135.90/x
  3. Step 3: Cross multiply
    120,845.86x = 166,767.20 × 67,135.90
  4. Step 4: Simplify right side
    120,845.86x = 11,196,066,062.48
  5. Step 5: Solve for x
    x = 11,196,066,062.48/120,845.86
  6. Step 6: Final answer
    x = 92,647.49

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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.