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Finding the Fourth Proportional to 190,347.48, 285,410.54 and 72,027.96

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Solution

The fourth proportional to 190,347.48, 285,410.54 and 72,027.96 is: 108,000.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,347.48 : 285,410.54 = 72,027.96 : x
  2. Step 2: Convert to fraction form
    190,347.48/285,410.54 = 72,027.96/x
  3. Step 3: Cross multiply
    190,347.48x = 285,410.54 × 72,027.96
  4. Step 4: Simplify right side
    190,347.48x = 20,557,538,958.70
  5. Step 5: Solve for x
    x = 20,557,538,958.70/190,347.48
  6. Step 6: Final answer
    x = 108,000.06

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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.