Home / 149,429.51-206,212.88-81,446.55

Finding the Fourth Proportional to 149,429.51, 206,212.88 and 81,446.55

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Solution

The fourth proportional to 149,429.51, 206,212.88 and 81,446.55 is: 112,396.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,429.51 : 206,212.88 = 81,446.55 : x
  2. Step 2: Convert to fraction form
    149,429.51/206,212.88 = 81,446.55/x
  3. Step 3: Cross multiply
    149,429.51x = 206,212.88 × 81,446.55
  4. Step 4: Simplify right side
    149,429.51x = 16,795,327,845.18
  5. Step 5: Solve for x
    x = 16,795,327,845.18/149,429.51
  6. Step 6: Final answer
    x = 112,396.32

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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.