Home / 138,379.41-190,994.67-90,604.98

Finding the Fourth Proportional to 138,379.41, 190,994.67 and 90,604.98

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Solution

The fourth proportional to 138,379.41, 190,994.67 and 90,604.98 is: 125,055.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,379.41 : 190,994.67 = 90,604.98 : x
  2. Step 2: Convert to fraction form
    138,379.41/190,994.67 = 90,604.98/x
  3. Step 3: Cross multiply
    138,379.41x = 190,994.67 × 90,604.98
  4. Step 4: Simplify right side
    138,379.41x = 17,305,068,255.46
  5. Step 5: Solve for x
    x = 17,305,068,255.46/138,379.41
  6. Step 6: Final answer
    x = 125,055.23

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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.