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Finding the Fourth Proportional to 168,870.94, 253,212.81 and 69,101.08

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Solution

The fourth proportional to 168,870.94, 253,212.81 and 69,101.08 is: 103,613.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,870.94 : 253,212.81 = 69,101.08 : x
  2. Step 2: Convert to fraction form
    168,870.94/253,212.81 = 69,101.08/x
  3. Step 3: Cross multiply
    168,870.94x = 253,212.81 × 69,101.08
  4. Step 4: Simplify right side
    168,870.94x = 17,497,278,640.83
  5. Step 5: Solve for x
    x = 17,497,278,640.83/168,870.94
  6. Step 6: Final answer
    x = 103,613.32

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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.