Home / 122,920.40-184,380.60-121,170.80

Finding the Fourth Proportional to 122,920.40, 184,380.60 and 121,170.80

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Solution

The fourth proportional to 122,920.40, 184,380.60 and 121,170.80 is: 181,756.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,920.40 : 184,380.60 = 121,170.80 : x
  2. Step 2: Convert to fraction form
    122,920.40/184,380.60 = 121,170.80/x
  3. Step 3: Cross multiply
    122,920.40x = 184,380.60 × 121,170.80
  4. Step 4: Simplify right side
    122,920.40x = 22,341,544,806.48
  5. Step 5: Solve for x
    x = 22,341,544,806.48/122,920.40
  6. Step 6: Final answer
    x = 181,756.20

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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.