Home / 212,142.45-292,683.74-131,540.97

Finding the Fourth Proportional to 212,142.45, 292,683.74 and 131,540.97

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Solution

The fourth proportional to 212,142.45, 292,683.74 and 131,540.97 is: 181,481.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,142.45 : 292,683.74 = 131,540.97 : x
  2. Step 2: Convert to fraction form
    212,142.45/292,683.74 = 131,540.97/x
  3. Step 3: Cross multiply
    212,142.45x = 292,683.74 × 131,540.97
  4. Step 4: Simplify right side
    212,142.45x = 38,499,902,405.12
  5. Step 5: Solve for x
    x = 38,499,902,405.12/212,142.45
  6. Step 6: Final answer
    x = 181,481.37

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1.5x scale

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.