Home / 91,372.82-136,727.09-75,429.60

Finding the Fourth Proportional to 91,372.82, 136,727.09 and 75,429.60

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Solution

The fourth proportional to 91,372.82, 136,727.09 and 75,429.60 is: 112,870.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,372.82 : 136,727.09 = 75,429.60 : x
  2. Step 2: Convert to fraction form
    91,372.82/136,727.09 = 75,429.60/x
  3. Step 3: Cross multiply
    91,372.82x = 136,727.09 × 75,429.60
  4. Step 4: Simplify right side
    91,372.82x = 10,313,269,707.86
  5. Step 5: Solve for x
    x = 10,313,269,707.86/91,372.82
  6. Step 6: Final answer
    x = 112,870.21

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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.