Home / 268,759.80-403,115.40-91,272.60

Finding the Fourth Proportional to 268,759.80, 403,115.40 and 91,272.60

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Solution

The fourth proportional to 268,759.80, 403,115.40 and 91,272.60 is: 136,900.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,759.80 : 403,115.40 = 91,272.60 : x
  2. Step 2: Convert to fraction form
    268,759.80/403,115.40 = 91,272.60/x
  3. Step 3: Cross multiply
    268,759.80x = 403,115.40 × 91,272.60
  4. Step 4: Simplify right side
    268,759.80x = 36,793,390,658.04
  5. Step 5: Solve for x
    x = 36,793,390,658.04/268,759.80
  6. Step 6: Final answer
    x = 136,900.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.