Home / 131,214.97-181,163.81-100,946.89

Finding the Fourth Proportional to 131,214.97, 181,163.81 and 100,946.89

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Solution

The fourth proportional to 131,214.97, 181,163.81 and 100,946.89 is: 139,373.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,214.97 : 181,163.81 = 100,946.89 : x
  2. Step 2: Convert to fraction form
    131,214.97/181,163.81 = 100,946.89/x
  3. Step 3: Cross multiply
    131,214.97x = 181,163.81 × 100,946.89
  4. Step 4: Simplify right side
    131,214.97x = 18,287,923,149.92
  5. Step 5: Solve for x
    x = 18,287,923,149.92/131,214.97
  6. Step 6: Final answer
    x = 139,373.76

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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.