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Finding the Fourth Proportional to 123,432.64, 170,336.80 and 66,843.84

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Solution

The fourth proportional to 123,432.64, 170,336.80 and 66,843.84 is: 92,244.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,432.64 : 170,336.80 = 66,843.84 : x
  2. Step 2: Convert to fraction form
    123,432.64/170,336.80 = 66,843.84/x
  3. Step 3: Cross multiply
    123,432.64x = 170,336.80 × 66,843.84
  4. Step 4: Simplify right side
    123,432.64x = 11,385,965,805.31
  5. Step 5: Solve for x
    x = 11,385,965,805.31/123,432.64
  6. Step 6: Final answer
    x = 92,244.37

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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.