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Finding the Fourth Proportional to 139,605.55, 192,654.42 and 75,943.35

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Solution

The fourth proportional to 139,605.55, 192,654.42 and 75,943.35 is: 104,801.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,605.55 : 192,654.42 = 75,943.35 : x
  2. Step 2: Convert to fraction form
    139,605.55/192,654.42 = 75,943.35/x
  3. Step 3: Cross multiply
    139,605.55x = 192,654.42 × 75,943.35
  4. Step 4: Simplify right side
    139,605.55x = 14,630,821,861.25
  5. Step 5: Solve for x
    x = 14,630,821,861.25/139,605.55
  6. Step 6: Final answer
    x = 104,801.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.