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Finding the Fourth Proportional to 168,820.86, 253,137.80 and 69,051.11

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Solution

The fourth proportional to 168,820.86, 253,137.80 and 69,051.11 is: 103,538.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,820.86 : 253,137.80 = 69,051.11 : x
  2. Step 2: Convert to fraction form
    168,820.86/253,137.80 = 69,051.11/x
  3. Step 3: Cross multiply
    168,820.86x = 253,137.80 × 69,051.11
  4. Step 4: Simplify right side
    168,820.86x = 17,479,446,072.96
  5. Step 5: Solve for x
    x = 17,479,446,072.96/168,820.86
  6. Step 6: Final answer
    x = 103,538.43

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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.