Home / 91,198.43-125,855.96-57,208.35

Finding the Fourth Proportional to 91,198.43, 125,855.96 and 57,208.35

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Solution

The fourth proportional to 91,198.43, 125,855.96 and 57,208.35 is: 78,948.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,198.43 : 125,855.96 = 57,208.35 : x
  2. Step 2: Convert to fraction form
    91,198.43/125,855.96 = 57,208.35/x
  3. Step 3: Cross multiply
    91,198.43x = 125,855.96 × 57,208.35
  4. Step 4: Simplify right side
    91,198.43x = 7,200,011,809.27
  5. Step 5: Solve for x
    x = 7,200,011,809.27/91,198.43
  6. Step 6: Final answer
    x = 78,948.86

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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.