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Finding the Fourth Proportional to 123,366, 170,245.08 and 66,777.78

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Solution

The fourth proportional to 123,366, 170,245.08 and 66,777.78 is: 92,153.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,366 : 170,245.08 = 66,777.78 : x
  2. Step 2: Convert to fraction form
    123,366/170,245.08 = 66,777.78/x
  3. Step 3: Cross multiply
    123,366x = 170,245.08 × 66,777.78
  4. Step 4: Simplify right side
    123,366x = 11,368,588,498.32
  5. Step 5: Solve for x
    x = 11,368,588,498.32/123,366
  6. Step 6: Final answer
    x = 92,153.34

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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.