Home / 131,989.20-197,724.60-89,998.80

Finding the Fourth Proportional to 131,989.20, 197,724.60 and 89,998.80

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Solution

The fourth proportional to 131,989.20, 197,724.60 and 89,998.80 is: 134,821.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,989.20 : 197,724.60 = 89,998.80 : x
  2. Step 2: Convert to fraction form
    131,989.20/197,724.60 = 89,998.80/x
  3. Step 3: Cross multiply
    131,989.20x = 197,724.60 × 89,998.80
  4. Step 4: Simplify right side
    131,989.20x = 17,794,976,730.48
  5. Step 5: Solve for x
    x = 17,794,976,730.48/131,989.20
  6. Step 6: Final answer
    x = 134,821.46

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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.