Home / 91,173.45-136,310.61-77,288.43

Finding the Fourth Proportional to 91,173.45, 136,310.61 and 77,288.43

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Solution

The fourth proportional to 91,173.45, 136,310.61 and 77,288.43 is: 115,551.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,173.45 : 136,310.61 = 77,288.43 : x
  2. Step 2: Convert to fraction form
    91,173.45/136,310.61 = 77,288.43/x
  3. Step 3: Cross multiply
    91,173.45x = 136,310.61 × 77,288.43
  4. Step 4: Simplify right side
    91,173.45x = 10,535,233,039.24
  5. Step 5: Solve for x
    x = 10,535,233,039.24/91,173.45
  6. Step 6: Final answer
    x = 115,551.55

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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.