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Finding the Fourth Proportional to 134,401.78, 185,412.40 and 80,593.48

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Solution

The fourth proportional to 134,401.78, 185,412.40 and 80,593.48 is: 111,181.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,401.78 : 185,412.40 = 80,593.48 : x
  2. Step 2: Convert to fraction form
    134,401.78/185,412.40 = 80,593.48/x
  3. Step 3: Cross multiply
    134,401.78x = 185,412.40 × 80,593.48
  4. Step 4: Simplify right side
    134,401.78x = 14,943,030,551.15
  5. Step 5: Solve for x
    x = 14,943,030,551.15/134,401.78
  6. Step 6: Final answer
    x = 111,181.79

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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.