Home / 91,198.19-125,855.61-57,208.10

Finding the Fourth Proportional to 91,198.19, 125,855.61 and 57,208.10

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Solution

The fourth proportional to 91,198.19, 125,855.61 and 57,208.10 is: 78,948.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,198.19 : 125,855.61 = 57,208.10 : x
  2. Step 2: Convert to fraction form
    91,198.19/125,855.61 = 57,208.10/x
  3. Step 3: Cross multiply
    91,198.19x = 125,855.61 × 57,208.10
  4. Step 4: Simplify right side
    91,198.19x = 7,199,960,637.08
  5. Step 5: Solve for x
    x = 7,199,960,637.08/91,198.19
  6. Step 6: Final answer
    x = 78,948.51

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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.