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Finding the Fourth Proportional to 123,165.88, 169,968.98 and 66,577.25

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Solution

The fourth proportional to 123,165.88, 169,968.98 and 66,577.25 is: 91,876.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,165.88 : 169,968.98 = 66,577.25 : x
  2. Step 2: Convert to fraction form
    123,165.88/169,968.98 = 66,577.25/x
  3. Step 3: Cross multiply
    123,165.88x = 169,968.98 × 66,577.25
  4. Step 4: Simplify right side
    123,165.88x = 11,316,067,273.71
  5. Step 5: Solve for x
    x = 11,316,067,273.71/123,165.88
  6. Step 6: Final answer
    x = 91,876.64

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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.