Home / 128,805.82-193,236.06-38,851.26

Finding the Fourth Proportional to 128,805.82, 193,236.06 and 38,851.26

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Solution

The fourth proportional to 128,805.82, 193,236.06 and 38,851.26 is: 58,285.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,805.82 : 193,236.06 = 38,851.26 : x
  2. Step 2: Convert to fraction form
    128,805.82/193,236.06 = 38,851.26/x
  3. Step 3: Cross multiply
    128,805.82x = 193,236.06 × 38,851.26
  4. Step 4: Simplify right side
    128,805.82x = 7,507,464,408.44
  5. Step 5: Solve for x
    x = 7,507,464,408.44/128,805.82
  6. Step 6: Final answer
    x = 58,285.13

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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.