Home / 122,759.20-183,701.40-85,142.80

Finding the Fourth Proportional to 122,759.20, 183,701.40 and 85,142.80

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Solution

The fourth proportional to 122,759.20, 183,701.40 and 85,142.80 is: 127,410.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,759.20 : 183,701.40 = 85,142.80 : x
  2. Step 2: Convert to fraction form
    122,759.20/183,701.40 = 85,142.80/x
  3. Step 3: Cross multiply
    122,759.20x = 183,701.40 × 85,142.80
  4. Step 4: Simplify right side
    122,759.20x = 15,640,851,559.92
  5. Step 5: Solve for x
    x = 15,640,851,559.92/122,759.20
  6. Step 6: Final answer
    x = 127,410.83

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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.