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Finding the Fourth Proportional to 190,405.42, 285,632.43 and 63,991.42

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Solution

The fourth proportional to 190,405.42, 285,632.43 and 63,991.42 is: 95,995.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,405.42 : 285,632.43 = 63,991.42 : x
  2. Step 2: Convert to fraction form
    190,405.42/285,632.43 = 63,991.42/x
  3. Step 3: Cross multiply
    190,405.42x = 285,632.43 × 63,991.42
  4. Step 4: Simplify right side
    190,405.42x = 18,278,024,793.75
  5. Step 5: Solve for x
    x = 18,278,024,793.75/190,405.42
  6. Step 6: Final answer
    x = 95,995.30

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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.