Home / 137,791.31-190,145.79-77,360.85

Finding the Fourth Proportional to 137,791.31, 190,145.79 and 77,360.85

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Solution

The fourth proportional to 137,791.31, 190,145.79 and 77,360.85 is: 106,754.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,791.31 : 190,145.79 = 77,360.85 : x
  2. Step 2: Convert to fraction form
    137,791.31/190,145.79 = 77,360.85/x
  3. Step 3: Cross multiply
    137,791.31x = 190,145.79 × 77,360.85
  4. Step 4: Simplify right side
    137,791.31x = 14,709,839,938.32
  5. Step 5: Solve for x
    x = 14,709,839,938.32/137,791.31
  6. Step 6: Final answer
    x = 106,754.49

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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.