Home / 120,270.12-165,972.96-66,557.40

Finding the Fourth Proportional to 120,270.12, 165,972.96 and 66,557.40

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Solution

The fourth proportional to 120,270.12, 165,972.96 and 66,557.40 is: 91,849.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,270.12 : 165,972.96 = 66,557.40 : x
  2. Step 2: Convert to fraction form
    120,270.12/165,972.96 = 66,557.40/x
  3. Step 3: Cross multiply
    120,270.12x = 165,972.96 × 66,557.40
  4. Step 4: Simplify right side
    120,270.12x = 11,046,728,687.90
  5. Step 5: Solve for x
    x = 11,046,728,687.90/120,270.12
  6. Step 6: Final answer
    x = 91,849.32

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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.