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Finding the Fourth Proportional to 212,141.70, 292,682.70 and 131,540.22

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Solution

The fourth proportional to 212,141.70, 292,682.70 and 131,540.22 is: 181,480.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,141.70 : 292,682.70 = 131,540.22 : x
  2. Step 2: Convert to fraction form
    212,141.70/292,682.70 = 131,540.22/x
  3. Step 3: Cross multiply
    212,141.70x = 292,682.70 × 131,540.22
  4. Step 4: Simplify right side
    212,141.70x = 38,499,546,748.19
  5. Step 5: Solve for x
    x = 38,499,546,748.19/212,141.70
  6. Step 6: Final answer
    x = 181,480.33

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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.