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Finding the Fourth Proportional to 168,987.22, 253,389.90 and 67,734.45

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Solution

The fourth proportional to 168,987.22, 253,389.90 and 67,734.45 is: 101,565.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,987.22 : 253,389.90 = 67,734.45 : x
  2. Step 2: Convert to fraction form
    168,987.22/253,389.90 = 67,734.45/x
  3. Step 3: Cross multiply
    168,987.22x = 253,389.90 × 67,734.45
  4. Step 4: Simplify right side
    168,987.22x = 17,163,225,766.06
  5. Step 5: Solve for x
    x = 17,163,225,766.06/168,987.22
  6. Step 6: Final answer
    x = 101,565.23

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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.