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Finding the Fourth Proportional to 104,056.80, 156,085.20 and 80,728.80

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Solution

The fourth proportional to 104,056.80, 156,085.20 and 80,728.80 is: 121,093.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,056.80 : 156,085.20 = 80,728.80 : x
  2. Step 2: Convert to fraction form
    104,056.80/156,085.20 = 80,728.80/x
  3. Step 3: Cross multiply
    104,056.80x = 156,085.20 × 80,728.80
  4. Step 4: Simplify right side
    104,056.80x = 12,600,570,893.76
  5. Step 5: Solve for x
    x = 12,600,570,893.76/104,056.80
  6. Step 6: Final answer
    x = 121,093.20

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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.