Home / 128,513.22-192,815.96-57,429.91

Finding the Fourth Proportional to 128,513.22, 192,815.96 and 57,429.91

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Solution

The fourth proportional to 128,513.22, 192,815.96 and 57,429.91 is: 86,165.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,513.22 : 192,815.96 = 57,429.91 : x
  2. Step 2: Convert to fraction form
    128,513.22/192,815.96 = 57,429.91/x
  3. Step 3: Cross multiply
    128,513.22x = 192,815.96 × 57,429.91
  4. Step 4: Simplify right side
    128,513.22x = 11,073,403,229.36
  5. Step 5: Solve for x
    x = 11,073,403,229.36/128,513.22
  6. Step 6: Final answer
    x = 86,165.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.