Home / 251,919.92-347,665.20-138,742.64

Finding the Fourth Proportional to 251,919.92, 347,665.20 and 138,742.64

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Solution

The fourth proportional to 251,919.92, 347,665.20 and 138,742.64 is: 191,473.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,919.92 : 347,665.20 = 138,742.64 : x
  2. Step 2: Convert to fraction form
    251,919.92/347,665.20 = 138,742.64/x
  3. Step 3: Cross multiply
    251,919.92x = 347,665.20 × 138,742.64
  4. Step 4: Simplify right side
    251,919.92x = 48,235,987,684.13
  5. Step 5: Solve for x
    x = 48,235,987,684.13/251,919.92
  6. Step 6: Final answer
    x = 191,473.50

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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.