Home / 142,781.92-197,128.62-91,883.09

Finding the Fourth Proportional to 142,781.92, 197,128.62 and 91,883.09

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Solution

The fourth proportional to 142,781.92, 197,128.62 and 91,883.09 is: 126,856.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,781.92 : 197,128.62 = 91,883.09 : x
  2. Step 2: Convert to fraction form
    142,781.92/197,128.62 = 91,883.09/x
  3. Step 3: Cross multiply
    142,781.92x = 197,128.62 × 91,883.09
  4. Step 4: Simplify right side
    142,781.92x = 18,112,787,225.86
  5. Step 5: Solve for x
    x = 18,112,787,225.86/142,781.92
  6. Step 6: Final answer
    x = 126,856.31

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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.