Home / 122,620.80-183,931.20-109,401.60

Finding the Fourth Proportional to 122,620.80, 183,931.20 and 109,401.60

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Solution

The fourth proportional to 122,620.80, 183,931.20 and 109,401.60 is: 164,102.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,620.80 : 183,931.20 = 109,401.60 : x
  2. Step 2: Convert to fraction form
    122,620.80/183,931.20 = 109,401.60/x
  3. Step 3: Cross multiply
    122,620.80x = 183,931.20 × 109,401.60
  4. Step 4: Simplify right side
    122,620.80x = 20,122,367,569.92
  5. Step 5: Solve for x
    x = 20,122,367,569.92/122,620.80
  6. Step 6: Final answer
    x = 164,102.40

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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.