Home / 142,629.96-196,832.36-78,101.92

Finding the Fourth Proportional to 142,629.96, 196,832.36 and 78,101.92

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Solution

The fourth proportional to 142,629.96, 196,832.36 and 78,101.92 is: 107,782.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,629.96 : 196,832.36 = 78,101.92 : x
  2. Step 2: Convert to fraction form
    142,629.96/196,832.36 = 78,101.92/x
  3. Step 3: Cross multiply
    142,629.96x = 196,832.36 × 78,101.92
  4. Step 4: Simplify right side
    142,629.96x = 15,372,984,249.97
  5. Step 5: Solve for x
    x = 15,372,984,249.97/142,629.96
  6. Step 6: Final answer
    x = 107,782.29

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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.