Home / 123,186.12-169,996.88-66,597.51

Finding the Fourth Proportional to 123,186.12, 169,996.88 and 66,597.51

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Solution

The fourth proportional to 123,186.12, 169,996.88 and 66,597.51 is: 91,904.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,186.12 : 169,996.88 = 66,597.51 : x
  2. Step 2: Convert to fraction form
    123,186.12/169,996.88 = 66,597.51/x
  3. Step 3: Cross multiply
    123,186.12x = 169,996.88 × 66,597.51
  4. Step 4: Simplify right side
    123,186.12x = 11,321,368,582.78
  5. Step 5: Solve for x
    x = 11,321,368,582.78/123,186.12
  6. Step 6: Final answer
    x = 91,904.58

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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.