Home / 212,142.20-292,683.39-131,540.72

Finding the Fourth Proportional to 212,142.20, 292,683.39 and 131,540.72

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Solution

The fourth proportional to 212,142.20, 292,683.39 and 131,540.72 is: 181,481.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,142.20 : 292,683.39 = 131,540.72 : x
  2. Step 2: Convert to fraction form
    212,142.20/292,683.39 = 131,540.72/x
  3. Step 3: Cross multiply
    212,142.20x = 292,683.39 × 131,540.72
  4. Step 4: Simplify right side
    212,142.20x = 38,499,783,852.64
  5. Step 5: Solve for x
    x = 38,499,783,852.64/212,142.20
  6. Step 6: Final answer
    x = 181,481.02

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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.