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Finding the Fourth Proportional to 109,170.42, 150,655.80 and 61,424.58

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Solution

The fourth proportional to 109,170.42, 150,655.80 and 61,424.58 is: 84,766.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,170.42 : 150,655.80 = 61,424.58 : x
  2. Step 2: Convert to fraction form
    109,170.42/150,655.80 = 61,424.58/x
  3. Step 3: Cross multiply
    109,170.42x = 150,655.80 × 61,424.58
  4. Step 4: Simplify right side
    109,170.42x = 9,253,969,239.56
  5. Step 5: Solve for x
    x = 9,253,969,239.56/109,170.42
  6. Step 6: Final answer
    x = 84,766.27

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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.