Home / 113,890.28-170,738.21-80,505.32

Finding the Fourth Proportional to 113,890.28, 170,738.21 and 80,505.32

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Solution

The fourth proportional to 113,890.28, 170,738.21 and 80,505.32 is: 120,689.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,890.28 : 170,738.21 = 80,505.32 : x
  2. Step 2: Convert to fraction form
    113,890.28/170,738.21 = 80,505.32/x
  3. Step 3: Cross multiply
    113,890.28x = 170,738.21 × 80,505.32
  4. Step 4: Simplify right side
    113,890.28x = 13,745,332,976.06
  5. Step 5: Solve for x
    x = 13,745,332,976.06/113,890.28
  6. Step 6: Final answer
    x = 120,689.26

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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.