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Finding the Fourth Proportional to 190,950.94, 285,990.08 and 91,181

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Solution

The fourth proportional to 190,950.94, 285,990.08 and 91,181 is: 136,563.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,950.94 : 285,990.08 = 91,181 : x
  2. Step 2: Convert to fraction form
    190,950.94/285,990.08 = 91,181/x
  3. Step 3: Cross multiply
    190,950.94x = 285,990.08 × 91,181
  4. Step 4: Simplify right side
    190,950.94x = 26,076,861,484.48
  5. Step 5: Solve for x
    x = 26,076,861,484.48/190,950.94
  6. Step 6: Final answer
    x = 136,563.15

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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.