Home / 128,908.05-193,367.32-61,405.39

Finding the Fourth Proportional to 128,908.05, 193,367.32 and 61,405.39

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Solution

The fourth proportional to 128,908.05, 193,367.32 and 61,405.39 is: 92,110.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,908.05 : 193,367.32 = 61,405.39 : x
  2. Step 2: Convert to fraction form
    128,908.05/193,367.32 = 61,405.39/x
  3. Step 3: Cross multiply
    128,908.05x = 193,367.32 × 61,405.39
  4. Step 4: Simplify right side
    128,908.05x = 11,873,794,871.06
  5. Step 5: Solve for x
    x = 11,873,794,871.06/128,908.05
  6. Step 6: Final answer
    x = 92,110.58

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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.