Home / 120,187.12-165,855.16-66,470.80

Finding the Fourth Proportional to 120,187.12, 165,855.16 and 66,470.80

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Solution

The fourth proportional to 120,187.12, 165,855.16 and 66,470.80 is: 91,728.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,187.12 : 165,855.16 = 66,470.80 : x
  2. Step 2: Convert to fraction form
    120,187.12/165,855.16 = 66,470.80/x
  3. Step 3: Cross multiply
    120,187.12x = 165,855.16 × 66,470.80
  4. Step 4: Simplify right side
    120,187.12x = 11,024,525,169.33
  5. Step 5: Solve for x
    x = 11,024,525,169.33/120,187.12
  6. Step 6: Final answer
    x = 91,728.01

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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.