Home / 131,091.72-180,936.45-92,811.49

Finding the Fourth Proportional to 131,091.72, 180,936.45 and 92,811.49

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Solution

The fourth proportional to 131,091.72, 180,936.45 and 92,811.49 is: 128,101.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,091.72 : 180,936.45 = 92,811.49 : x
  2. Step 2: Convert to fraction form
    131,091.72/180,936.45 = 92,811.49/x
  3. Step 3: Cross multiply
    131,091.72x = 180,936.45 × 92,811.49
  4. Step 4: Simplify right side
    131,091.72x = 16,792,981,067.47
  5. Step 5: Solve for x
    x = 16,792,981,067.47/131,091.72
  6. Step 6: Final answer
    x = 128,101.01

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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.