Home / 117,091.40-161,546.47-76,236.87

Finding the Fourth Proportional to 117,091.40, 161,546.47 and 76,236.87

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Solution

The fourth proportional to 117,091.40, 161,546.47 and 76,236.87 is: 105,181.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,091.40 : 161,546.47 = 76,236.87 : x
  2. Step 2: Convert to fraction form
    117,091.40/161,546.47 = 76,236.87/x
  3. Step 3: Cross multiply
    117,091.40x = 161,546.47 × 76,236.87
  4. Step 4: Simplify right side
    117,091.40x = 12,315,796,424.62
  5. Step 5: Solve for x
    x = 12,315,796,424.62/117,091.40
  6. Step 6: Final answer
    x = 105,181.05

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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.