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Finding the Fourth Proportional to 120,492.20, 180,705.90 and 36,252.20

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Solution

The fourth proportional to 120,492.20, 180,705.90 and 36,252.20 is: 54,368.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,492.20 : 180,705.90 = 36,252.20 : x
  2. Step 2: Convert to fraction form
    120,492.20/180,705.90 = 36,252.20/x
  3. Step 3: Cross multiply
    120,492.20x = 180,705.90 × 36,252.20
  4. Step 4: Simplify right side
    120,492.20x = 6,550,986,427.98
  5. Step 5: Solve for x
    x = 6,550,986,427.98/120,492.20
  6. Step 6: Final answer
    x = 54,368.55

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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.