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Finding the Fourth Proportional to 122,808.80, 184,213.20 and 91,704.80

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Solution

The fourth proportional to 122,808.80, 184,213.20 and 91,704.80 is: 137,557.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,808.80 : 184,213.20 = 91,704.80 : x
  2. Step 2: Convert to fraction form
    122,808.80/184,213.20 = 91,704.80/x
  3. Step 3: Cross multiply
    122,808.80x = 184,213.20 × 91,704.80
  4. Step 4: Simplify right side
    122,808.80x = 16,893,234,663.36
  5. Step 5: Solve for x
    x = 16,893,234,663.36/122,808.80
  6. Step 6: Final answer
    x = 137,557.20

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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.