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Finding the Fourth Proportional to 190,670.78, 285,894.03 and 72,350.44

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Solution

The fourth proportional to 190,670.78, 285,894.03 and 72,350.44 is: 108,483.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,670.78 : 285,894.03 = 72,350.44 : x
  2. Step 2: Convert to fraction form
    190,670.78/285,894.03 = 72,350.44/x
  3. Step 3: Cross multiply
    190,670.78x = 285,894.03 × 72,350.44
  4. Step 4: Simplify right side
    190,670.78x = 20,684,558,420.45
  5. Step 5: Solve for x
    x = 20,684,558,420.45/190,670.78
  6. Step 6: Final answer
    x = 108,483.10

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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.