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Finding the Fourth Proportional to 168,136.63, 251,924.61 and 138,243.07

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Solution

The fourth proportional to 168,136.63, 251,924.61 and 138,243.07 is: 207,134.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,136.63 : 251,924.61 = 138,243.07 : x
  2. Step 2: Convert to fraction form
    168,136.63/251,924.61 = 138,243.07/x
  3. Step 3: Cross multiply
    168,136.63x = 251,924.61 × 138,243.07
  4. Step 4: Simplify right side
    168,136.63x = 34,826,831,494.95
  5. Step 5: Solve for x
    x = 34,826,831,494.95/168,136.63
  6. Step 6: Final answer
    x = 207,134.11

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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.