Home / 116,687.45-161,030.75-68,940.70

Finding the Fourth Proportional to 116,687.45, 161,030.75 and 68,940.70

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Solution

The fourth proportional to 116,687.45, 161,030.75 and 68,940.70 is: 95,139.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,687.45 : 161,030.75 = 68,940.70 : x
  2. Step 2: Convert to fraction form
    116,687.45/161,030.75 = 68,940.70/x
  3. Step 3: Cross multiply
    116,687.45x = 161,030.75 × 68,940.70
  4. Step 4: Simplify right side
    116,687.45x = 11,101,571,879.24
  5. Step 5: Solve for x
    x = 11,101,571,879.24/116,687.45
  6. Step 6: Final answer
    x = 95,139.38

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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.