Home / 122,825.20-183,800.40-85,208.80

Finding the Fourth Proportional to 122,825.20, 183,800.40 and 85,208.80

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Solution

The fourth proportional to 122,825.20, 183,800.40 and 85,208.80 is: 127,509.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,825.20 : 183,800.40 = 85,208.80 : x
  2. Step 2: Convert to fraction form
    122,825.20/183,800.40 = 85,208.80/x
  3. Step 3: Cross multiply
    122,825.20x = 183,800.40 × 85,208.80
  4. Step 4: Simplify right side
    122,825.20x = 15,661,411,523.52
  5. Step 5: Solve for x
    x = 15,661,411,523.52/122,825.20
  6. Step 6: Final answer
    x = 127,509.76

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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.