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Finding the Fourth Proportional to 122,492.60, 183,738.90 and 80,502.20

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Solution

The fourth proportional to 122,492.60, 183,738.90 and 80,502.20 is: 120,753.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,492.60 : 183,738.90 = 80,502.20 : x
  2. Step 2: Convert to fraction form
    122,492.60/183,738.90 = 80,502.20/x
  3. Step 3: Cross multiply
    122,492.60x = 183,738.90 × 80,502.20
  4. Step 4: Simplify right side
    122,492.60x = 14,791,385,675.58
  5. Step 5: Solve for x
    x = 14,791,385,675.58/122,492.60
  6. Step 6: Final answer
    x = 120,753.30

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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.