Home / 91,198.16-125,855.52-57,208.08

Finding the Fourth Proportional to 91,198.16, 125,855.52 and 57,208.08

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Solution

The fourth proportional to 91,198.16, 125,855.52 and 57,208.08 is: 78,948.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,198.16 : 125,855.52 = 57,208.08 : x
  2. Step 2: Convert to fraction form
    91,198.16/125,855.52 = 57,208.08/x
  3. Step 3: Cross multiply
    91,198.16x = 125,855.52 × 57,208.08
  4. Step 4: Simplify right side
    91,198.16x = 7,199,952,656.60
  5. Step 5: Solve for x
    x = 7,199,952,656.60/91,198.16
  6. Step 6: Final answer
    x = 78,948.44

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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.