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Finding the Fourth Proportional to 142,709.20, 214,066.20 and 54,004.48

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Solution

The fourth proportional to 142,709.20, 214,066.20 and 54,004.48 is: 81,007.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,709.20 : 214,066.20 = 54,004.48 : x
  2. Step 2: Convert to fraction form
    142,709.20/214,066.20 = 54,004.48/x
  3. Step 3: Cross multiply
    142,709.20x = 214,066.20 × 54,004.48
  4. Step 4: Simplify right side
    142,709.20x = 11,560,533,816.58
  5. Step 5: Solve for x
    x = 11,560,533,816.58/142,709.20
  6. Step 6: Final answer
    x = 81,007.63

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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.