Home / 142,850.22-197,132.21-78,318.69

Finding the Fourth Proportional to 142,850.22, 197,132.21 and 78,318.69

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Solution

The fourth proportional to 142,850.22, 197,132.21 and 78,318.69 is: 108,079.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,850.22 : 197,132.21 = 78,318.69 : x
  2. Step 2: Convert to fraction form
    142,850.22/197,132.21 = 78,318.69/x
  3. Step 3: Cross multiply
    142,850.22x = 197,132.21 × 78,318.69
  4. Step 4: Simplify right side
    142,850.22x = 15,439,135,066.75
  5. Step 5: Solve for x
    x = 15,439,135,066.75/142,850.22
  6. Step 6: Final answer
    x = 108,079.19

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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.