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Finding the Fourth Proportional to 123,166.21, 169,969.44 and 66,577.60

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Solution

The fourth proportional to 123,166.21, 169,969.44 and 66,577.60 is: 91,877.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,166.21 : 169,969.44 = 66,577.60 : x
  2. Step 2: Convert to fraction form
    123,166.21/169,969.44 = 66,577.60/x
  3. Step 3: Cross multiply
    123,166.21x = 169,969.44 × 66,577.60
  4. Step 4: Simplify right side
    123,166.21x = 11,316,157,388.54
  5. Step 5: Solve for x
    x = 11,316,157,388.54/123,166.21
  6. Step 6: Final answer
    x = 91,877.13

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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.