Home / 142,900.36-197,201.70-79,247.56

Finding the Fourth Proportional to 142,900.36, 197,201.70 and 79,247.56

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Solution

The fourth proportional to 142,900.36, 197,201.70 and 79,247.56 is: 109,361.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,900.36 : 197,201.70 = 79,247.56 : x
  2. Step 2: Convert to fraction form
    142,900.36/197,201.70 = 79,247.56/x
  3. Step 3: Cross multiply
    142,900.36x = 197,201.70 × 79,247.56
  4. Step 4: Simplify right side
    142,900.36x = 15,627,753,552.85
  5. Step 5: Solve for x
    x = 15,627,753,552.85/142,900.36
  6. Step 6: Final answer
    x = 109,361.19

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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.