Home / 138,961.47-191,761.68-75,297.90

Finding the Fourth Proportional to 138,961.47, 191,761.68 and 75,297.90

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Solution

The fourth proportional to 138,961.47, 191,761.68 and 75,297.90 is: 103,908.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,961.47 : 191,761.68 = 75,297.90 : x
  2. Step 2: Convert to fraction form
    138,961.47/191,761.68 = 75,297.90/x
  3. Step 3: Cross multiply
    138,961.47x = 191,761.68 × 75,297.90
  4. Step 4: Simplify right side
    138,961.47x = 14,439,251,804.47
  5. Step 5: Solve for x
    x = 14,439,251,804.47/138,961.47
  6. Step 6: Final answer
    x = 103,908.31

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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.