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Finding the Fourth Proportional to 168,815.44, 253,129.72 and 69,045.68

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Solution

The fourth proportional to 168,815.44, 253,129.72 and 69,045.68 is: 103,530.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,815.44 : 253,129.72 = 69,045.68 : x
  2. Step 2: Convert to fraction form
    168,815.44/253,129.72 = 69,045.68/x
  3. Step 3: Cross multiply
    168,815.44x = 253,129.72 × 69,045.68
  4. Step 4: Simplify right side
    168,815.44x = 17,477,513,645.61
  5. Step 5: Solve for x
    x = 17,477,513,645.61/168,815.44
  6. Step 6: Final answer
    x = 103,530.30

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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.