Home / 142,580.66-196,758.92-78,917.09

Finding the Fourth Proportional to 142,580.66, 196,758.92 and 78,917.09

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Solution

The fourth proportional to 142,580.66, 196,758.92 and 78,917.09 is: 108,904.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,580.66 : 196,758.92 = 78,917.09 : x
  2. Step 2: Convert to fraction form
    142,580.66/196,758.92 = 78,917.09/x
  3. Step 3: Cross multiply
    142,580.66x = 196,758.92 × 78,917.09
  4. Step 4: Simplify right side
    142,580.66x = 15,527,640,611.44
  5. Step 5: Solve for x
    x = 15,527,640,611.44/142,580.66
  6. Step 6: Final answer
    x = 108,904.26

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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.