Home / 128,738.48-193,135.55-52,837.20

Finding the Fourth Proportional to 128,738.48, 193,135.55 and 52,837.20

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Solution

The fourth proportional to 128,738.48, 193,135.55 and 52,837.20 is: 79,267.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,738.48 : 193,135.55 = 52,837.20 : x
  2. Step 2: Convert to fraction form
    128,738.48/193,135.55 = 52,837.20/x
  3. Step 3: Cross multiply
    128,738.48x = 193,135.55 × 52,837.20
  4. Step 4: Simplify right side
    128,738.48x = 10,204,741,418.27
  5. Step 5: Solve for x
    x = 10,204,741,418.27/128,738.48
  6. Step 6: Final answer
    x = 79,267.22

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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.