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Finding the Fourth Proportional to 123,685.92, 170,684.64 and 67,096.80

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Solution

The fourth proportional to 123,685.92, 170,684.64 and 67,096.80 is: 92,592.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,685.92 : 170,684.64 = 67,096.80 : x
  2. Step 2: Convert to fraction form
    123,685.92/170,684.64 = 67,096.80/x
  3. Step 3: Cross multiply
    123,685.92x = 170,684.64 × 67,096.80
  4. Step 4: Simplify right side
    123,685.92x = 11,452,393,153.15
  5. Step 5: Solve for x
    x = 11,452,393,153.15/123,685.92
  6. Step 6: Final answer
    x = 92,592.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.