Home / 128,707.03-193,057.75-35,212.78

Finding the Fourth Proportional to 128,707.03, 193,057.75 and 35,212.78

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Solution

The fourth proportional to 128,707.03, 193,057.75 and 35,212.78 is: 52,818.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,707.03 : 193,057.75 = 35,212.78 : x
  2. Step 2: Convert to fraction form
    128,707.03/193,057.75 = 35,212.78/x
  3. Step 3: Cross multiply
    128,707.03x = 193,057.75 × 35,212.78
  4. Step 4: Simplify right side
    128,707.03x = 6,798,100,078.05
  5. Step 5: Solve for x
    x = 6,798,100,078.05/128,707.03
  6. Step 6: Final answer
    x = 52,818.41

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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.