Home / 128,766.10-193,149.15-122,205.10

Finding the Fourth Proportional to 128,766.10, 193,149.15 and 122,205.10

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Solution

The fourth proportional to 128,766.10, 193,149.15 and 122,205.10 is: 183,307.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,766.10 : 193,149.15 = 122,205.10 : x
  2. Step 2: Convert to fraction form
    128,766.10/193,149.15 = 122,205.10/x
  3. Step 3: Cross multiply
    128,766.10x = 193,149.15 × 122,205.10
  4. Step 4: Simplify right side
    128,766.10x = 23,603,811,190.67
  5. Step 5: Solve for x
    x = 23,603,811,190.67/128,766.10
  6. Step 6: Final answer
    x = 183,307.65

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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.