Home / 149,804.67-206,729.28-81,821.64

Finding the Fourth Proportional to 149,804.67, 206,729.28 and 81,821.64

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Solution

The fourth proportional to 149,804.67, 206,729.28 and 81,821.64 is: 112,913.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,804.67 : 206,729.28 = 81,821.64 : x
  2. Step 2: Convert to fraction form
    149,804.67/206,729.28 = 81,821.64/x
  3. Step 3: Cross multiply
    149,804.67x = 206,729.28 × 81,821.64
  4. Step 4: Simplify right side
    149,804.67x = 16,914,928,725.62
  5. Step 5: Solve for x
    x = 16,914,928,725.62/149,804.67
  6. Step 6: Final answer
    x = 112,913.23

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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.