Home / 130,724.80-196,093.60-68,516.80

Finding the Fourth Proportional to 130,724.80, 196,093.60 and 68,516.80

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Solution

The fourth proportional to 130,724.80, 196,093.60 and 68,516.80 is: 102,778.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,724.80 : 196,093.60 = 68,516.80 : x
  2. Step 2: Convert to fraction form
    130,724.80/196,093.60 = 68,516.80/x
  3. Step 3: Cross multiply
    130,724.80x = 196,093.60 × 68,516.80
  4. Step 4: Simplify right side
    130,724.80x = 13,435,705,972.48
  5. Step 5: Solve for x
    x = 13,435,705,972.48/130,724.80
  6. Step 6: Final answer
    x = 102,778.55

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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.