Home / 142,187.24-196,219.73-80,930.43

Finding the Fourth Proportional to 142,187.24, 196,219.73 and 80,930.43

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Solution

The fourth proportional to 142,187.24, 196,219.73 and 80,930.43 is: 111,684.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,187.24 : 196,219.73 = 80,930.43 : x
  2. Step 2: Convert to fraction form
    142,187.24/196,219.73 = 80,930.43/x
  3. Step 3: Cross multiply
    142,187.24x = 196,219.73 × 80,930.43
  4. Step 4: Simplify right side
    142,187.24x = 15,880,146,718.73
  5. Step 5: Solve for x
    x = 15,880,146,718.73/142,187.24
  6. Step 6: Final answer
    x = 111,684.76

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1.5x scale

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.