Home / 142,180.79-196,119.38-108,114.60

Finding the Fourth Proportional to 142,180.79, 196,119.38 and 108,114.60

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Solution

The fourth proportional to 142,180.79, 196,119.38 and 108,114.60 is: 149,129.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,180.79 : 196,119.38 = 108,114.60 : x
  2. Step 2: Convert to fraction form
    142,180.79/196,119.38 = 108,114.60/x
  3. Step 3: Cross multiply
    142,180.79x = 196,119.38 × 108,114.60
  4. Step 4: Simplify right side
    142,180.79x = 21,203,367,830.65
  5. Step 5: Solve for x
    x = 21,203,367,830.65/142,180.79
  6. Step 6: Final answer
    x = 149,129.62

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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.