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Finding the Fourth Proportional to 126,838.80, 190,258.20 and 119,581.20

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Solution

The fourth proportional to 126,838.80, 190,258.20 and 119,581.20 is: 179,371.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,838.80 : 190,258.20 = 119,581.20 : x
  2. Step 2: Convert to fraction form
    126,838.80/190,258.20 = 119,581.20/x
  3. Step 3: Cross multiply
    126,838.80x = 190,258.20 × 119,581.20
  4. Step 4: Simplify right side
    126,838.80x = 22,751,303,865.84
  5. Step 5: Solve for x
    x = 22,751,303,865.84/126,838.80
  6. Step 6: Final answer
    x = 179,371.80

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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.