Home / 109,491.06-151,086.36-80,825.96

Finding the Fourth Proportional to 109,491.06, 151,086.36 and 80,825.96

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Solution

The fourth proportional to 109,491.06, 151,086.36 and 80,825.96 is: 111,531.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,491.06 : 151,086.36 = 80,825.96 : x
  2. Step 2: Convert to fraction form
    109,491.06/151,086.36 = 80,825.96/x
  3. Step 3: Cross multiply
    109,491.06x = 151,086.36 × 80,825.96
  4. Step 4: Simplify right side
    109,491.06x = 12,211,700,089.91
  5. Step 5: Solve for x
    x = 12,211,700,089.91/109,491.06
  6. Step 6: Final answer
    x = 111,531.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.