Home / 138,217.63-190,799.19-92,921.88

Finding the Fourth Proportional to 138,217.63, 190,799.19 and 92,921.88

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Solution

The fourth proportional to 138,217.63, 190,799.19 and 92,921.88 is: 128,271.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,217.63 : 190,799.19 = 92,921.88 : x
  2. Step 2: Convert to fraction form
    138,217.63/190,799.19 = 92,921.88/x
  3. Step 3: Cross multiply
    138,217.63x = 190,799.19 × 92,921.88
  4. Step 4: Simplify right side
    138,217.63x = 17,729,418,972.67
  5. Step 5: Solve for x
    x = 17,729,418,972.67/138,217.63
  6. Step 6: Final answer
    x = 128,271.76

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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.