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Finding the Fourth Proportional to 112,272.26, 168,529.70 and 99,871.70

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Solution

The fourth proportional to 112,272.26, 168,529.70 and 99,871.70 is: 149,915.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,272.26 : 168,529.70 = 99,871.70 : x
  2. Step 2: Convert to fraction form
    112,272.26/168,529.70 = 99,871.70/x
  3. Step 3: Cross multiply
    112,272.26x = 168,529.70 × 99,871.70
  4. Step 4: Simplify right side
    112,272.26x = 16,831,347,046.52
  5. Step 5: Solve for x
    x = 16,831,347,046.52/112,272.26
  6. Step 6: Final answer
    x = 149,915.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.