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Finding the Fourth Proportional to 168,766.40, 253,178.76 and 68,980.88

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Solution

The fourth proportional to 168,766.40, 253,178.76 and 68,980.88 is: 103,483.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,766.40 : 253,178.76 = 68,980.88 : x
  2. Step 2: Convert to fraction form
    168,766.40/253,178.76 = 68,980.88/x
  3. Step 3: Cross multiply
    168,766.40x = 253,178.76 × 68,980.88
  4. Step 4: Simplify right side
    168,766.40x = 17,464,493,662.11
  5. Step 5: Solve for x
    x = 17,464,493,662.11/168,766.40
  6. Step 6: Final answer
    x = 103,483.24

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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.