Home / 142,229.81-196,260.41-78,563.81

Finding the Fourth Proportional to 142,229.81, 196,260.41 and 78,563.81

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Solution

The fourth proportional to 142,229.81, 196,260.41 and 78,563.81 is: 108,408.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,229.81 : 196,260.41 = 78,563.81 : x
  2. Step 2: Convert to fraction form
    142,229.81/196,260.41 = 78,563.81/x
  3. Step 3: Cross multiply
    142,229.81x = 196,260.41 × 78,563.81
  4. Step 4: Simplify right side
    142,229.81x = 15,418,964,187.64
  5. Step 5: Solve for x
    x = 15,418,964,187.64/142,229.81
  6. Step 6: Final answer
    x = 108,408.81

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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.