Home / 149,720.60-206,611.09-81,734.94

Finding the Fourth Proportional to 149,720.60, 206,611.09 and 81,734.94

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Solution

The fourth proportional to 149,720.60, 206,611.09 and 81,734.94 is: 112,792.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,720.60 : 206,611.09 = 81,734.94 : x
  2. Step 2: Convert to fraction form
    149,720.60/206,611.09 = 81,734.94/x
  3. Step 3: Cross multiply
    149,720.60x = 206,611.09 × 81,734.94
  4. Step 4: Simplify right side
    149,720.60x = 16,887,344,840.15
  5. Step 5: Solve for x
    x = 16,887,344,840.15/149,720.60
  6. Step 6: Final answer
    x = 112,792.39

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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.