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Finding the Fourth Proportional to 120,486.60, 180,600.30 and 45,577.80

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Solution

The fourth proportional to 120,486.60, 180,600.30 and 45,577.80 is: 68,317.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,486.60 : 180,600.30 = 45,577.80 : x
  2. Step 2: Convert to fraction form
    120,486.60/180,600.30 = 45,577.80/x
  3. Step 3: Cross multiply
    120,486.60x = 180,600.30 × 45,577.80
  4. Step 4: Simplify right side
    120,486.60x = 8,231,364,353.34
  5. Step 5: Solve for x
    x = 8,231,364,353.34/120,486.60
  6. Step 6: Final answer
    x = 68,317.67

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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.