Home / 117,187.09-161,728.13-66,209.19

Finding the Fourth Proportional to 117,187.09, 161,728.13 and 66,209.19

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Solution

The fourth proportional to 117,187.09, 161,728.13 and 66,209.19 is: 91,374.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,187.09 : 161,728.13 = 66,209.19 : x
  2. Step 2: Convert to fraction form
    117,187.09/161,728.13 = 66,209.19/x
  3. Step 3: Cross multiply
    117,187.09x = 161,728.13 × 66,209.19
  4. Step 4: Simplify right side
    117,187.09x = 10,707,888,487.51
  5. Step 5: Solve for x
    x = 10,707,888,487.51/117,187.09
  6. Step 6: Final answer
    x = 91,374.30

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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.