Home / 192,921.48-289,427.70-80,539.20

Finding the Fourth Proportional to 192,921.48, 289,427.70 and 80,539.20

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Solution

The fourth proportional to 192,921.48, 289,427.70 and 80,539.20 is: 120,827.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,921.48 : 289,427.70 = 80,539.20 : x
  2. Step 2: Convert to fraction form
    192,921.48/289,427.70 = 80,539.20/x
  3. Step 3: Cross multiply
    192,921.48x = 289,427.70 × 80,539.20
  4. Step 4: Simplify right side
    192,921.48x = 23,310,275,415.84
  5. Step 5: Solve for x
    x = 23,310,275,415.84/192,921.48
  6. Step 6: Final answer
    x = 120,827.79

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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.