Home / 122,480.40-183,720.60-39,382.80

Finding the Fourth Proportional to 122,480.40, 183,720.60 and 39,382.80

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Solution

The fourth proportional to 122,480.40, 183,720.60 and 39,382.80 is: 59,074.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,480.40 : 183,720.60 = 39,382.80 : x
  2. Step 2: Convert to fraction form
    122,480.40/183,720.60 = 39,382.80/x
  3. Step 3: Cross multiply
    122,480.40x = 183,720.60 × 39,382.80
  4. Step 4: Simplify right side
    122,480.40x = 7,235,431,645.68
  5. Step 5: Solve for x
    x = 7,235,431,645.68/122,480.40
  6. Step 6: Final answer
    x = 59,074.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.