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Finding the Fourth Proportional to 491,068, 736,599.90 and 136,081

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Solution

The fourth proportional to 491,068, 736,599.90 and 136,081 is: 204,120.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,068 : 736,599.90 = 136,081 : x
  2. Step 2: Convert to fraction form
    491,068/736,599.90 = 136,081/x
  3. Step 3: Cross multiply
    491,068x = 736,599.90 × 136,081
  4. Step 4: Simplify right side
    491,068x = 100,237,250,991.90
  5. Step 5: Solve for x
    x = 100,237,250,991.90/491,068
  6. Step 6: Final answer
    x = 204,120.92

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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.