Home / 138,215.40-190,796.11-92,919.66

Finding the Fourth Proportional to 138,215.40, 190,796.11 and 92,919.66

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Solution

The fourth proportional to 138,215.40, 190,796.11 and 92,919.66 is: 128,268.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,215.40 : 190,796.11 = 92,919.66 : x
  2. Step 2: Convert to fraction form
    138,215.40/190,796.11 = 92,919.66/x
  3. Step 3: Cross multiply
    138,215.40x = 190,796.11 × 92,919.66
  4. Step 4: Simplify right side
    138,215.40x = 17,728,708,722.74
  5. Step 5: Solve for x
    x = 17,728,708,722.74/138,215.40
  6. Step 6: Final answer
    x = 128,268.69

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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.