Home / 91,738.80-137,608.20-82,881.45

Finding the Fourth Proportional to 91,738.80, 137,608.20 and 82,881.45

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Solution

The fourth proportional to 91,738.80, 137,608.20 and 82,881.45 is: 124,322.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,738.80 : 137,608.20 = 82,881.45 : x
  2. Step 2: Convert to fraction form
    91,738.80/137,608.20 = 82,881.45/x
  3. Step 3: Cross multiply
    91,738.80x = 137,608.20 × 82,881.45
  4. Step 4: Simplify right side
    91,738.80x = 11,405,167,147.89
  5. Step 5: Solve for x
    x = 11,405,167,147.89/91,738.80
  6. Step 6: Final answer
    x = 124,322.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.