Home / 149,745.04-206,646.59-81,761.80

Finding the Fourth Proportional to 149,745.04, 206,646.59 and 81,761.80

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Solution

The fourth proportional to 149,745.04, 206,646.59 and 81,761.80 is: 112,830.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,745.04 : 206,646.59 = 81,761.80 : x
  2. Step 2: Convert to fraction form
    149,745.04/206,646.59 = 81,761.80/x
  3. Step 3: Cross multiply
    149,745.04x = 206,646.59 × 81,761.80
  4. Step 4: Simplify right side
    149,745.04x = 16,895,797,162.26
  5. Step 5: Solve for x
    x = 16,895,797,162.26/149,745.04
  6. Step 6: Final answer
    x = 112,830.43

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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.