Home / 120,012.82-165,617.16-66,297.86

Finding the Fourth Proportional to 120,012.82, 165,617.16 and 66,297.86

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Solution

The fourth proportional to 120,012.82, 165,617.16 and 66,297.86 is: 91,490.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,012.82 : 165,617.16 = 66,297.86 : x
  2. Step 2: Convert to fraction form
    120,012.82/165,617.16 = 66,297.86/x
  3. Step 3: Cross multiply
    120,012.82x = 165,617.16 × 66,297.86
  4. Step 4: Simplify right side
    120,012.82x = 10,980,062,831.64
  5. Step 5: Solve for x
    x = 10,980,062,831.64/120,012.82
  6. Step 6: Final answer
    x = 91,490.75

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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.