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Finding the Fourth Proportional to 123,542.60, 170,489.40 and 66,953.84

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Solution

The fourth proportional to 123,542.60, 170,489.40 and 66,953.84 is: 92,396.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,542.60 : 170,489.40 = 66,953.84 : x
  2. Step 2: Convert to fraction form
    123,542.60/170,489.40 = 66,953.84/x
  3. Step 3: Cross multiply
    123,542.60x = 170,489.40 × 66,953.84
  4. Step 4: Simplify right side
    123,542.60x = 11,414,920,009.30
  5. Step 5: Solve for x
    x = 11,414,920,009.30/123,542.60
  6. Step 6: Final answer
    x = 92,396.63

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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.