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Finding the Fourth Proportional to 168,733.80, 253,100.70 and 68,828.40

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Solution

The fourth proportional to 168,733.80, 253,100.70 and 68,828.40 is: 103,242.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,733.80 : 253,100.70 = 68,828.40 : x
  2. Step 2: Convert to fraction form
    168,733.80/253,100.70 = 68,828.40/x
  3. Step 3: Cross multiply
    168,733.80x = 253,100.70 × 68,828.40
  4. Step 4: Simplify right side
    168,733.80x = 17,420,516,219.88
  5. Step 5: Solve for x
    x = 17,420,516,219.88/168,733.80
  6. Step 6: Final answer
    x = 103,242.60

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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.