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Finding the Fourth Proportional to 133,368.76, 199,949.28 and 66,774.58

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Solution

The fourth proportional to 133,368.76, 199,949.28 and 66,774.58 is: 100,109.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,368.76 : 199,949.28 = 66,774.58 : x
  2. Step 2: Convert to fraction form
    133,368.76/199,949.28 = 66,774.58/x
  3. Step 3: Cross multiply
    133,368.76x = 199,949.28 × 66,774.58
  4. Step 4: Simplify right side
    133,368.76x = 13,351,529,193.30
  5. Step 5: Solve for x
    x = 13,351,529,193.30/133,368.76
  6. Step 6: Final answer
    x = 100,109.87

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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.