Home / 149,870.66-206,814.97-81,884.42

Finding the Fourth Proportional to 149,870.66, 206,814.97 and 81,884.42

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Solution

The fourth proportional to 149,870.66, 206,814.97 and 81,884.42 is: 112,996.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,870.66 : 206,814.97 = 81,884.42 : x
  2. Step 2: Convert to fraction form
    149,870.66/206,814.97 = 81,884.42/x
  3. Step 3: Cross multiply
    149,870.66x = 206,814.97 × 81,884.42
  4. Step 4: Simplify right side
    149,870.66x = 16,934,923,709.60
  5. Step 5: Solve for x
    x = 16,934,923,709.60/149,870.66
  6. Step 6: Final answer
    x = 112,996.93

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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.