Home / 99,825.19-137,578.33-82,739.45

Finding the Fourth Proportional to 99,825.19, 137,578.33 and 82,739.45

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Solution

The fourth proportional to 99,825.19, 137,578.33 and 82,739.45 is: 114,030.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,825.19 : 137,578.33 = 82,739.45 : x
  2. Step 2: Convert to fraction form
    99,825.19/137,578.33 = 82,739.45/x
  3. Step 3: Cross multiply
    99,825.19x = 137,578.33 × 82,739.45
  4. Step 4: Simplify right side
    99,825.19x = 11,383,155,803.49
  5. Step 5: Solve for x
    x = 11,383,155,803.49/99,825.19
  6. Step 6: Final answer
    x = 114,030.90

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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.