Home / 116,811.36-161,212.20-71,519.76

Finding the Fourth Proportional to 116,811.36, 161,212.20 and 71,519.76

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Solution

The fourth proportional to 116,811.36, 161,212.20 and 71,519.76 is: 98,704.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,811.36 : 161,212.20 = 71,519.76 : x
  2. Step 2: Convert to fraction form
    116,811.36/161,212.20 = 71,519.76/x
  3. Step 3: Cross multiply
    116,811.36x = 161,212.20 × 71,519.76
  4. Step 4: Simplify right side
    116,811.36x = 11,529,857,853.07
  5. Step 5: Solve for x
    x = 11,529,857,853.07/116,811.36
  6. Step 6: Final answer
    x = 98,704.94

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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.