Home / 128,970.24-193,456.32-35,481.12

Finding the Fourth Proportional to 128,970.24, 193,456.32 and 35,481.12

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Solution

The fourth proportional to 128,970.24, 193,456.32 and 35,481.12 is: 53,221.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,970.24 : 193,456.32 = 35,481.12 : x
  2. Step 2: Convert to fraction form
    128,970.24/193,456.32 = 35,481.12/x
  3. Step 3: Cross multiply
    128,970.24x = 193,456.32 × 35,481.12
  4. Step 4: Simplify right side
    128,970.24x = 6,864,046,904.68
  5. Step 5: Solve for x
    x = 6,864,046,904.68/128,970.24
  6. Step 6: Final answer
    x = 53,221.94

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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.