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Finding the Fourth Proportional to 139,470.48, 192,468.20 and 75,808.73

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Solution

The fourth proportional to 139,470.48, 192,468.20 and 75,808.73 is: 104,615.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,470.48 : 192,468.20 = 75,808.73 : x
  2. Step 2: Convert to fraction form
    139,470.48/192,468.20 = 75,808.73/x
  3. Step 3: Cross multiply
    139,470.48x = 192,468.20 × 75,808.73
  4. Step 4: Simplify right side
    139,470.48x = 14,590,768,466.00
  5. Step 5: Solve for x
    x = 14,590,768,466.00/139,470.48
  6. Step 6: Final answer
    x = 104,615.46

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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.