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Finding the Fourth Proportional to 123,513.64, 170,449.41 and 66,925

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Solution

The fourth proportional to 123,513.64, 170,449.41 and 66,925 is: 92,356.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,513.64 : 170,449.41 = 66,925 : x
  2. Step 2: Convert to fraction form
    123,513.64/170,449.41 = 66,925/x
  3. Step 3: Cross multiply
    123,513.64x = 170,449.41 × 66,925
  4. Step 4: Simplify right side
    123,513.64x = 11,407,326,764.25
  5. Step 5: Solve for x
    x = 11,407,326,764.25/123,513.64
  6. Step 6: Final answer
    x = 92,356.82

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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.