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Finding the Fourth Proportional to 116,910.77, 161,330.81 and 65,922.08

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Solution

The fourth proportional to 116,910.77, 161,330.81 and 65,922.08 is: 90,969.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,910.77 : 161,330.81 = 65,922.08 : x
  2. Step 2: Convert to fraction form
    116,910.77/161,330.81 = 65,922.08/x
  3. Step 3: Cross multiply
    116,910.77x = 161,330.81 × 65,922.08
  4. Step 4: Simplify right side
    116,910.77x = 10,635,261,427.02
  5. Step 5: Solve for x
    x = 10,635,261,427.02/116,910.77
  6. Step 6: Final answer
    x = 90,969.05

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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.