Home / 141,942.72-195,889.92-78,280.64

Finding the Fourth Proportional to 141,942.72, 195,889.92 and 78,280.64

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Solution

The fourth proportional to 141,942.72, 195,889.92 and 78,280.64 is: 108,032.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,942.72 : 195,889.92 = 78,280.64 : x
  2. Step 2: Convert to fraction form
    141,942.72/195,889.92 = 78,280.64/x
  3. Step 3: Cross multiply
    141,942.72x = 195,889.92 × 78,280.64
  4. Step 4: Simplify right side
    141,942.72x = 15,334,388,307.15
  5. Step 5: Solve for x
    x = 15,334,388,307.15/141,942.72
  6. Step 6: Final answer
    x = 108,032.23

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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.