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Finding the Fourth Proportional to 100,836.30, 151,363.80 and 63,438.60

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Solution

The fourth proportional to 100,836.30, 151,363.80 and 63,438.60 is: 95,226.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,836.30 : 151,363.80 = 63,438.60 : x
  2. Step 2: Convert to fraction form
    100,836.30/151,363.80 = 63,438.60/x
  3. Step 3: Cross multiply
    100,836.30x = 151,363.80 × 63,438.60
  4. Step 4: Simplify right side
    100,836.30x = 9,602,307,562.68
  5. Step 5: Solve for x
    x = 9,602,307,562.68/100,836.30
  6. Step 6: Final answer
    x = 95,226.69

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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.