Home / 117,188.09-161,729.51-66,210.19

Finding the Fourth Proportional to 117,188.09, 161,729.51 and 66,210.19

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Solution

The fourth proportional to 117,188.09, 161,729.51 and 66,210.19 is: 91,375.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,188.09 : 161,729.51 = 66,210.19 : x
  2. Step 2: Convert to fraction form
    117,188.09/161,729.51 = 66,210.19/x
  3. Step 3: Cross multiply
    117,188.09x = 161,729.51 × 66,210.19
  4. Step 4: Simplify right side
    117,188.09x = 10,708,141,585.71
  5. Step 5: Solve for x
    x = 10,708,141,585.71/117,188.09
  6. Step 6: Final answer
    x = 91,375.68

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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.