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Finding the Fourth Proportional to 168,622.53, 252,901.35 and 78,640.44

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Solution

The fourth proportional to 168,622.53, 252,901.35 and 78,640.44 is: 117,945.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,622.53 : 252,901.35 = 78,640.44 : x
  2. Step 2: Convert to fraction form
    168,622.53/252,901.35 = 78,640.44/x
  3. Step 3: Cross multiply
    168,622.53x = 252,901.35 × 78,640.44
  4. Step 4: Simplify right side
    168,622.53x = 19,888,273,440.59
  5. Step 5: Solve for x
    x = 19,888,273,440.59/168,622.53
  6. Step 6: Final answer
    x = 117,945.53

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1.5x scale

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.