Home / 99,786.25-137,705.21-55,074.25

Finding the Fourth Proportional to 99,786.25, 137,705.21 and 55,074.25

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Solution

The fourth proportional to 99,786.25, 137,705.21 and 55,074.25 is: 76,002.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,786.25 : 137,705.21 = 55,074.25 : x
  2. Step 2: Convert to fraction form
    99,786.25/137,705.21 = 55,074.25/x
  3. Step 3: Cross multiply
    99,786.25x = 137,705.21 × 55,074.25
  4. Step 4: Simplify right side
    99,786.25x = 7,584,011,161.84
  5. Step 5: Solve for x
    x = 7,584,011,161.84/99,786.25
  6. Step 6: Final answer
    x = 76,002.57

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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.