Home / 149,408.07-206,188.37-81,430.71

Finding the Fourth Proportional to 149,408.07, 206,188.37 and 81,430.71

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Solution

The fourth proportional to 149,408.07, 206,188.37 and 81,430.71 is: 112,377.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,408.07 : 206,188.37 = 81,430.71 : x
  2. Step 2: Convert to fraction form
    149,408.07/206,188.37 = 81,430.71/x
  3. Step 3: Cross multiply
    149,408.07x = 206,188.37 × 81,430.71
  4. Step 4: Simplify right side
    149,408.07x = 16,790,065,362.84
  5. Step 5: Solve for x
    x = 16,790,065,362.84/149,408.07
  6. Step 6: Final answer
    x = 112,377.23

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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.