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Finding the Fourth Proportional to 100,936.70, 151,405.05 and 63,611.90

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Solution

The fourth proportional to 100,936.70, 151,405.05 and 63,611.90 is: 95,417.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,936.70 : 151,405.05 = 63,611.90 : x
  2. Step 2: Convert to fraction form
    100,936.70/151,405.05 = 63,611.90/x
  3. Step 3: Cross multiply
    100,936.70x = 151,405.05 × 63,611.90
  4. Step 4: Simplify right side
    100,936.70x = 9,631,162,900.10
  5. Step 5: Solve for x
    x = 9,631,162,900.10/100,936.70
  6. Step 6: Final answer
    x = 95,417.85

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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.