Home / 138,223.97-190,755.22-77,798.53

Finding the Fourth Proportional to 138,223.97, 190,755.22 and 77,798.53

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Solution

The fourth proportional to 138,223.97, 190,755.22 and 77,798.53 is: 107,365.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,223.97 : 190,755.22 = 77,798.53 : x
  2. Step 2: Convert to fraction form
    138,223.97/190,755.22 = 77,798.53/x
  3. Step 3: Cross multiply
    138,223.97x = 190,755.22 × 77,798.53
  4. Step 4: Simplify right side
    138,223.97x = 14,840,475,034.44
  5. Step 5: Solve for x
    x = 14,840,475,034.44/138,223.97
  6. Step 6: Final answer
    x = 107,365.42

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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.