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Finding the Fourth Proportional to 104,492.40, 156,738.60 and 72,999.60

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Solution

The fourth proportional to 104,492.40, 156,738.60 and 72,999.60 is: 109,499.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,492.40 : 156,738.60 = 72,999.60 : x
  2. Step 2: Convert to fraction form
    104,492.40/156,738.60 = 72,999.60/x
  3. Step 3: Cross multiply
    104,492.40x = 156,738.60 × 72,999.60
  4. Step 4: Simplify right side
    104,492.40x = 11,441,855,104.56
  5. Step 5: Solve for x
    x = 11,441,855,104.56/104,492.40
  6. Step 6: Final answer
    x = 109,499.40

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Similar ratio
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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.