Home / 126,118.31-188,381.79-106,189.28

Finding the Fourth Proportional to 126,118.31, 188,381.79 and 106,189.28

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Solution

The fourth proportional to 126,118.31, 188,381.79 and 106,189.28 is: 158,613.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,118.31 : 188,381.79 = 106,189.28 : x
  2. Step 2: Convert to fraction form
    126,118.31/188,381.79 = 106,189.28/x
  3. Step 3: Cross multiply
    126,118.31x = 188,381.79 × 106,189.28
  4. Step 4: Simplify right side
    126,118.31x = 20,004,125,703.30
  5. Step 5: Solve for x
    x = 20,004,125,703.30/126,118.31
  6. Step 6: Final answer
    x = 158,613.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.