Home / 128,669.72-192,998.40-35,175.68

Finding the Fourth Proportional to 128,669.72, 192,998.40 and 35,175.68

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Solution

The fourth proportional to 128,669.72, 192,998.40 and 35,175.68 is: 52,761.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,669.72 : 192,998.40 = 35,175.68 : x
  2. Step 2: Convert to fraction form
    128,669.72/192,998.40 = 35,175.68/x
  3. Step 3: Cross multiply
    128,669.72x = 192,998.40 × 35,175.68
  4. Step 4: Simplify right side
    128,669.72x = 6,788,849,958.91
  5. Step 5: Solve for x
    x = 6,788,849,958.91/128,669.72
  6. Step 6: Final answer
    x = 52,761.83

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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.