Home / 131,291.54-181,209.11-85,408.48

Finding the Fourth Proportional to 131,291.54, 181,209.11 and 85,408.48

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Solution

The fourth proportional to 131,291.54, 181,209.11 and 85,408.48 is: 117,881.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,291.54 : 181,209.11 = 85,408.48 : x
  2. Step 2: Convert to fraction form
    131,291.54/181,209.11 = 85,408.48/x
  3. Step 3: Cross multiply
    131,291.54x = 181,209.11 × 85,408.48
  4. Step 4: Simplify right side
    131,291.54x = 15,476,794,647.25
  5. Step 5: Solve for x
    x = 15,476,794,647.25/131,291.54
  6. Step 6: Final answer
    x = 117,881.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.