Home / 126,116.81-188,379.56-106,187.78

Finding the Fourth Proportional to 126,116.81, 188,379.56 and 106,187.78

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Solution

The fourth proportional to 126,116.81, 188,379.56 and 106,187.78 is: 158,611.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,116.81 : 188,379.56 = 106,187.78 : x
  2. Step 2: Convert to fraction form
    126,116.81/188,379.56 = 106,187.78/x
  3. Step 3: Cross multiply
    126,116.81x = 188,379.56 × 106,187.78
  4. Step 4: Simplify right side
    126,116.81x = 20,003,605,800.94
  5. Step 5: Solve for x
    x = 20,003,605,800.94/126,116.81
  6. Step 6: Final answer
    x = 158,611.74

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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.