Home / 120,284.48-165,991.36-66,569.60

Finding the Fourth Proportional to 120,284.48, 165,991.36 and 66,569.60

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Solution

The fourth proportional to 120,284.48, 165,991.36 and 66,569.60 is: 91,865.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,284.48 : 165,991.36 = 66,569.60 : x
  2. Step 2: Convert to fraction form
    120,284.48/165,991.36 = 66,569.60/x
  3. Step 3: Cross multiply
    120,284.48x = 165,991.36 × 66,569.60
  4. Step 4: Simplify right side
    120,284.48x = 11,049,978,438.66
  5. Step 5: Solve for x
    x = 11,049,978,438.66/120,284.48
  6. Step 6: Final answer
    x = 91,865.37

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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.