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Finding the Fourth Proportional to 143,481.60, 215,222.40 and 118,112.40

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Solution

The fourth proportional to 143,481.60, 215,222.40 and 118,112.40 is: 177,168.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,481.60 : 215,222.40 = 118,112.40 : x
  2. Step 2: Convert to fraction form
    143,481.60/215,222.40 = 118,112.40/x
  3. Step 3: Cross multiply
    143,481.60x = 215,222.40 × 118,112.40
  4. Step 4: Simplify right side
    143,481.60x = 25,420,434,197.76
  5. Step 5: Solve for x
    x = 25,420,434,197.76/143,481.60
  6. Step 6: Final answer
    x = 177,168.60

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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.