Home / 149,261.88-205,974.50-81,278.58

Finding the Fourth Proportional to 149,261.88, 205,974.50 and 81,278.58

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Solution

The fourth proportional to 149,261.88, 205,974.50 and 81,278.58 is: 112,160.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,261.88 : 205,974.50 = 81,278.58 : x
  2. Step 2: Convert to fraction form
    149,261.88/205,974.50 = 81,278.58/x
  3. Step 3: Cross multiply
    149,261.88x = 205,974.50 × 81,278.58
  4. Step 4: Simplify right side
    149,261.88x = 16,741,314,876.21
  5. Step 5: Solve for x
    x = 16,741,314,876.21/149,261.88
  6. Step 6: Final answer
    x = 112,160.69

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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.