Home / 149,373.75-206,133.33-81,391.53

Finding the Fourth Proportional to 149,373.75, 206,133.33 and 81,391.53

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Solution

The fourth proportional to 149,373.75, 206,133.33 and 81,391.53 is: 112,318.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,373.75 : 206,133.33 = 81,391.53 : x
  2. Step 2: Convert to fraction form
    149,373.75/206,133.33 = 81,391.53/x
  3. Step 3: Cross multiply
    149,373.75x = 206,133.33 × 81,391.53
  4. Step 4: Simplify right side
    149,373.75x = 16,777,507,112.69
  5. Step 5: Solve for x
    x = 16,777,507,112.69/149,373.75
  6. Step 6: Final answer
    x = 112,318.98

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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.