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Finding the Fourth Proportional to 138,167.30, 207,360.30 and 53,967.80

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Solution

The fourth proportional to 138,167.30, 207,360.30 and 53,967.80 is: 80,994.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,167.30 : 207,360.30 = 53,967.80 : x
  2. Step 2: Convert to fraction form
    138,167.30/207,360.30 = 53,967.80/x
  3. Step 3: Cross multiply
    138,167.30x = 207,360.30 × 53,967.80
  4. Step 4: Simplify right side
    138,167.30x = 11,190,779,198.34
  5. Step 5: Solve for x
    x = 11,190,779,198.34/138,167.30
  6. Step 6: Final answer
    x = 80,994.41

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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.