Home / 149,380.20-206,126.02-101,087.72

Finding the Fourth Proportional to 149,380.20, 206,126.02 and 101,087.72

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Solution

The fourth proportional to 149,380.20, 206,126.02 and 101,087.72 is: 139,488.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,380.20 : 206,126.02 = 101,087.72 : x
  2. Step 2: Convert to fraction form
    149,380.20/206,126.02 = 101,087.72/x
  3. Step 3: Cross multiply
    149,380.20x = 206,126.02 × 101,087.72
  4. Step 4: Simplify right side
    149,380.20x = 20,836,809,394.47
  5. Step 5: Solve for x
    x = 20,836,809,394.47/149,380.20
  6. Step 6: Final answer
    x = 139,488.43

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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.