Home / 123,106.24-169,886.55-66,517.60

Finding the Fourth Proportional to 123,106.24, 169,886.55 and 66,517.60

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Solution

The fourth proportional to 123,106.24, 169,886.55 and 66,517.60 is: 91,794.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,106.24 : 169,886.55 = 66,517.60 : x
  2. Step 2: Convert to fraction form
    123,106.24/169,886.55 = 66,517.60/x
  3. Step 3: Cross multiply
    123,106.24x = 169,886.55 × 66,517.60
  4. Step 4: Simplify right side
    123,106.24x = 11,300,445,578.28
  5. Step 5: Solve for x
    x = 11,300,445,578.28/123,106.24
  6. Step 6: Final answer
    x = 91,794.25

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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.