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Finding the Fourth Proportional to 116,396.80, 160,640.64 and 66,104.32

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Solution

The fourth proportional to 116,396.80, 160,640.64 and 66,104.32 is: 91,231.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,396.80 : 160,640.64 = 66,104.32 : x
  2. Step 2: Convert to fraction form
    116,396.80/160,640.64 = 66,104.32/x
  3. Step 3: Cross multiply
    116,396.80x = 160,640.64 × 66,104.32
  4. Step 4: Simplify right side
    116,396.80x = 10,619,040,271.56
  5. Step 5: Solve for x
    x = 10,619,040,271.56/116,396.80
  6. Step 6: Final answer
    x = 91,231.38

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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.