Home / 143,109.24-197,422.14-100,691.16

Finding the Fourth Proportional to 143,109.24, 197,422.14 and 100,691.16

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Solution

The fourth proportional to 143,109.24, 197,422.14 and 100,691.16 is: 138,905.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,109.24 : 197,422.14 = 100,691.16 : x
  2. Step 2: Convert to fraction form
    143,109.24/197,422.14 = 100,691.16/x
  3. Step 3: Cross multiply
    143,109.24x = 197,422.14 × 100,691.16
  4. Step 4: Simplify right side
    143,109.24x = 19,878,664,286.28
  5. Step 5: Solve for x
    x = 19,878,664,286.28/143,109.24
  6. Step 6: Final answer
    x = 138,905.53

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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.