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Finding the Fourth Proportional to 116,712.70, 161,066.68 and 65,727.25

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Solution

The fourth proportional to 116,712.70, 161,066.68 and 65,727.25 is: 90,705.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,712.70 : 161,066.68 = 65,727.25 : x
  2. Step 2: Convert to fraction form
    116,712.70/161,066.68 = 65,727.25/x
  3. Step 3: Cross multiply
    116,712.70x = 161,066.68 × 65,727.25
  4. Step 4: Simplify right side
    116,712.70x = 10,586,469,376.05
  5. Step 5: Solve for x
    x = 10,586,469,376.05/116,712.70
  6. Step 6: Final answer
    x = 90,705.38

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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.