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Finding the Fourth Proportional to 167,608.20, 251,412.30 and 138,059.40

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Solution

The fourth proportional to 167,608.20, 251,412.30 and 138,059.40 is: 207,089.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,608.20 : 251,412.30 = 138,059.40 : x
  2. Step 2: Convert to fraction form
    167,608.20/251,412.30 = 138,059.40/x
  3. Step 3: Cross multiply
    167,608.20x = 251,412.30 × 138,059.40
  4. Step 4: Simplify right side
    167,608.20x = 34,709,831,290.62
  5. Step 5: Solve for x
    x = 34,709,831,290.62/167,608.20
  6. Step 6: Final answer
    x = 207,089.10

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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.