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Finding the Fourth Proportional to 120,285.98, 165,992.33 and 66,571.02

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Solution

The fourth proportional to 120,285.98, 165,992.33 and 66,571.02 is: 91,866.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,285.98 : 165,992.33 = 66,571.02 : x
  2. Step 2: Convert to fraction form
    120,285.98/165,992.33 = 66,571.02/x
  3. Step 3: Cross multiply
    120,285.98x = 165,992.33 × 66,571.02
  4. Step 4: Simplify right side
    120,285.98x = 11,050,278,720.28
  5. Step 5: Solve for x
    x = 11,050,278,720.28/120,285.98
  6. Step 6: Final answer
    x = 91,866.72

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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.