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Finding the Fourth Proportional to 122,540.80, 183,811.20 and 69,955.60

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Solution

The fourth proportional to 122,540.80, 183,811.20 and 69,955.60 is: 104,933.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,540.80 : 183,811.20 = 69,955.60 : x
  2. Step 2: Convert to fraction form
    122,540.80/183,811.20 = 69,955.60/x
  3. Step 3: Cross multiply
    122,540.80x = 183,811.20 × 69,955.60
  4. Step 4: Simplify right side
    122,540.80x = 12,858,622,782.72
  5. Step 5: Solve for x
    x = 12,858,622,782.72/122,540.80
  6. Step 6: Final answer
    x = 104,933.40

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1.5x scale

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.