Home / 91,579.14-137,992.74-75,303.78

Finding the Fourth Proportional to 91,579.14, 137,992.74 and 75,303.78

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Solution

The fourth proportional to 91,579.14, 137,992.74 and 75,303.78 is: 113,468.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,579.14 : 137,992.74 = 75,303.78 : x
  2. Step 2: Convert to fraction form
    91,579.14/137,992.74 = 75,303.78/x
  3. Step 3: Cross multiply
    91,579.14x = 137,992.74 × 75,303.78
  4. Step 4: Simplify right side
    91,579.14x = 10,391,374,934.56
  5. Step 5: Solve for x
    x = 10,391,374,934.56/91,579.14
  6. Step 6: Final answer
    x = 113,468.80

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.