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Finding the Fourth Proportional to 168,123.54, 252,047.88 and 78,222.24

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Solution

The fourth proportional to 168,123.54, 252,047.88 and 78,222.24 is: 117,269.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,123.54 : 252,047.88 = 78,222.24 : x
  2. Step 2: Convert to fraction form
    168,123.54/252,047.88 = 78,222.24/x
  3. Step 3: Cross multiply
    168,123.54x = 252,047.88 × 78,222.24
  4. Step 4: Simplify right side
    168,123.54x = 19,715,749,760.85
  5. Step 5: Solve for x
    x = 19,715,749,760.85/168,123.54
  6. Step 6: Final answer
    x = 117,269.42

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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.