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Finding the Fourth Proportional to 104,426.40, 156,639.60 and 75,120.60

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Solution

The fourth proportional to 104,426.40, 156,639.60 and 75,120.60 is: 112,680.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,426.40 : 156,639.60 = 75,120.60 : x
  2. Step 2: Convert to fraction form
    104,426.40/156,639.60 = 75,120.60/x
  3. Step 3: Cross multiply
    104,426.40x = 156,639.60 × 75,120.60
  4. Step 4: Simplify right side
    104,426.40x = 11,766,860,735.76
  5. Step 5: Solve for x
    x = 11,766,860,735.76/104,426.40
  6. Step 6: Final answer
    x = 112,680.90

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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.