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Finding the Fourth Proportional to 139,466.57, 192,455.69 and 75,803.81

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Solution

The fourth proportional to 139,466.57, 192,455.69 and 75,803.81 is: 104,604.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,466.57 : 192,455.69 = 75,803.81 : x
  2. Step 2: Convert to fraction form
    139,466.57/192,455.69 = 75,803.81/x
  3. Step 3: Cross multiply
    139,466.57x = 192,455.69 × 75,803.81
  4. Step 4: Simplify right side
    139,466.57x = 14,588,873,216.88
  5. Step 5: Solve for x
    x = 14,588,873,216.88/139,466.57
  6. Step 6: Final answer
    x = 104,604.81

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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.