Home / 107,846.80-161,622.52-68,431.60

Finding the Fourth Proportional to 107,846.80, 161,622.52 and 68,431.60

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Solution

The fourth proportional to 107,846.80, 161,622.52 and 68,431.60 is: 102,553.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,846.80 : 161,622.52 = 68,431.60 : x
  2. Step 2: Convert to fraction form
    107,846.80/161,622.52 = 68,431.60/x
  3. Step 3: Cross multiply
    107,846.80x = 161,622.52 × 68,431.60
  4. Step 4: Simplify right side
    107,846.80x = 11,060,087,639.63
  5. Step 5: Solve for x
    x = 11,060,087,639.63/107,846.80
  6. Step 6: Final answer
    x = 102,553.69

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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.