Home / 116,861.40-161,230.01-65,867.85

Finding the Fourth Proportional to 116,861.40, 161,230.01 and 65,867.85

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Solution

The fourth proportional to 116,861.40, 161,230.01 and 65,867.85 is: 90,875.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,861.40 : 161,230.01 = 65,867.85 : x
  2. Step 2: Convert to fraction form
    116,861.40/161,230.01 = 65,867.85/x
  3. Step 3: Cross multiply
    116,861.40x = 161,230.01 × 65,867.85
  4. Step 4: Simplify right side
    116,861.40x = 10,619,873,784.84
  5. Step 5: Solve for x
    x = 10,619,873,784.84/116,861.40
  6. Step 6: Final answer
    x = 90,875.80

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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.