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Finding the Fourth Proportional to 109,361.48, 150,913.26 and 61,617.65

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Solution

The fourth proportional to 109,361.48, 150,913.26 and 61,617.65 is: 85,029.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,361.48 : 150,913.26 = 61,617.65 : x
  2. Step 2: Convert to fraction form
    109,361.48/150,913.26 = 61,617.65/x
  3. Step 3: Cross multiply
    109,361.48x = 150,913.26 × 61,617.65
  4. Step 4: Simplify right side
    109,361.48x = 9,298,919,680.47
  5. Step 5: Solve for x
    x = 9,298,919,680.47/109,361.48
  6. Step 6: Final answer
    x = 85,029.21

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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.