Home / 142,729.24-197,034.78-100,324.12

Finding the Fourth Proportional to 142,729.24, 197,034.78 and 100,324.12

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Solution

The fourth proportional to 142,729.24, 197,034.78 and 100,324.12 is: 138,495.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,729.24 : 197,034.78 = 100,324.12 : x
  2. Step 2: Convert to fraction form
    142,729.24/197,034.78 = 100,324.12/x
  3. Step 3: Cross multiply
    142,729.24x = 197,034.78 × 100,324.12
  4. Step 4: Simplify right side
    142,729.24x = 19,767,340,912.89
  5. Step 5: Solve for x
    x = 19,767,340,912.89/142,729.24
  6. Step 6: Final answer
    x = 138,495.38

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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.