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Finding the Fourth Proportional to 120,627.60, 180,941.40 and 111,296.40

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Solution

The fourth proportional to 120,627.60, 180,941.40 and 111,296.40 is: 166,944.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,627.60 : 180,941.40 = 111,296.40 : x
  2. Step 2: Convert to fraction form
    120,627.60/180,941.40 = 111,296.40/x
  3. Step 3: Cross multiply
    120,627.60x = 180,941.40 × 111,296.40
  4. Step 4: Simplify right side
    120,627.60x = 20,138,126,430.96
  5. Step 5: Solve for x
    x = 20,138,126,430.96/120,627.60
  6. Step 6: Final answer
    x = 166,944.60

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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.