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Finding the Fourth Proportional to 199,272.60, 299,369.70 and 137,064.60

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Solution

The fourth proportional to 199,272.60, 299,369.70 and 137,064.60 is: 205,913.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,272.60 : 299,369.70 = 137,064.60 : x
  2. Step 2: Convert to fraction form
    199,272.60/299,369.70 = 137,064.60/x
  3. Step 3: Cross multiply
    199,272.60x = 299,369.70 × 137,064.60
  4. Step 4: Simplify right side
    199,272.60x = 41,032,988,182.62
  5. Step 5: Solve for x
    x = 41,032,988,182.62/199,272.60
  6. Step 6: Final answer
    x = 205,913.85

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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.