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Finding the Fourth Proportional to 123,079.05, 169,849.26 and 66,490.44

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Solution

The fourth proportional to 123,079.05, 169,849.26 and 66,490.44 is: 91,756.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,079.05 : 169,849.26 = 66,490.44 : x
  2. Step 2: Convert to fraction form
    123,079.05/169,849.26 = 66,490.44/x
  3. Step 3: Cross multiply
    123,079.05x = 169,849.26 × 66,490.44
  4. Step 4: Simplify right side
    123,079.05x = 11,293,352,031.07
  5. Step 5: Solve for x
    x = 11,293,352,031.07/123,079.05
  6. Step 6: Final answer
    x = 91,756.90

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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.