Home / 136,342.46-188,150.81-78,989.60

Finding the Fourth Proportional to 136,342.46, 188,150.81 and 78,989.60

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Solution

The fourth proportional to 136,342.46, 188,150.81 and 78,989.60 is: 109,004.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,342.46 : 188,150.81 = 78,989.60 : x
  2. Step 2: Convert to fraction form
    136,342.46/188,150.81 = 78,989.60/x
  3. Step 3: Cross multiply
    136,342.46x = 188,150.81 × 78,989.60
  4. Step 4: Simplify right side
    136,342.46x = 14,861,957,297.01
  5. Step 5: Solve for x
    x = 14,861,957,297.01/136,342.46
  6. Step 6: Final answer
    x = 109,004.61

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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.