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Finding the Fourth Proportional to 142,662.80, 213,997.08 and 53,958.32

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Solution

The fourth proportional to 142,662.80, 213,997.08 and 53,958.32 is: 80,938.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,662.80 : 213,997.08 = 53,958.32 : x
  2. Step 2: Convert to fraction form
    142,662.80/213,997.08 = 53,958.32/x
  3. Step 3: Cross multiply
    142,662.80x = 213,997.08 × 53,958.32
  4. Step 4: Simplify right side
    142,662.80x = 11,546,922,921.71
  5. Step 5: Solve for x
    x = 11,546,922,921.71/142,662.80
  6. Step 6: Final answer
    x = 80,938.57

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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.