Home / 91,131.18-125,840.14-57,198.48

Finding the Fourth Proportional to 91,131.18, 125,840.14 and 57,198.48

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Solution

The fourth proportional to 91,131.18, 125,840.14 and 57,198.48 is: 78,983.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,131.18 : 125,840.14 = 57,198.48 : x
  2. Step 2: Convert to fraction form
    91,131.18/125,840.14 = 57,198.48/x
  3. Step 3: Cross multiply
    91,131.18x = 125,840.14 × 57,198.48
  4. Step 4: Simplify right side
    91,131.18x = 7,197,864,730.99
  5. Step 5: Solve for x
    x = 7,197,864,730.99/91,131.18
  6. Step 6: Final answer
    x = 78,983.56

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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.