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Finding the Fourth Proportional to 120,287.44, 165,993.42 and 66,574.72

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Solution

The fourth proportional to 120,287.44, 165,993.42 and 66,574.72 is: 91,871.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,287.44 : 165,993.42 = 66,574.72 : x
  2. Step 2: Convert to fraction form
    120,287.44/165,993.42 = 66,574.72/x
  3. Step 3: Cross multiply
    120,287.44x = 165,993.42 × 66,574.72
  4. Step 4: Simplify right side
    120,287.44x = 11,050,965,458.34
  5. Step 5: Solve for x
    x = 11,050,965,458.34/120,287.44
  6. Step 6: Final answer
    x = 91,871.32

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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.