Home / 149,192.20-205,902.79-83,791.78

Finding the Fourth Proportional to 149,192.20, 205,902.79 and 83,791.78

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Solution

The fourth proportional to 149,192.20, 205,902.79 and 83,791.78 is: 115,642.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,192.20 : 205,902.79 = 83,791.78 : x
  2. Step 2: Convert to fraction form
    149,192.20/205,902.79 = 83,791.78/x
  3. Step 3: Cross multiply
    149,192.20x = 205,902.79 × 83,791.78
  4. Step 4: Simplify right side
    149,192.20x = 17,252,961,281.07
  5. Step 5: Solve for x
    x = 17,252,961,281.07/149,192.20
  6. Step 6: Final answer
    x = 115,642.52

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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.