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Finding the Fourth Proportional to 109,343.72, 150,893.64 and 61,612.44

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Solution

The fourth proportional to 109,343.72, 150,893.64 and 61,612.44 is: 85,024.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,343.72 : 150,893.64 = 61,612.44 : x
  2. Step 2: Convert to fraction form
    109,343.72/150,893.64 = 61,612.44/x
  3. Step 3: Cross multiply
    109,343.72x = 150,893.64 × 61,612.44
  4. Step 4: Simplify right side
    109,343.72x = 9,296,925,340.88
  5. Step 5: Solve for x
    x = 9,296,925,340.88/109,343.72
  6. Step 6: Final answer
    x = 85,024.78

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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.