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Finding the Fourth Proportional to 139,468.17, 192,466.34 and 75,805.81

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Solution

The fourth proportional to 139,468.17, 192,466.34 and 75,805.81 is: 104,612.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,468.17 : 192,466.34 = 75,805.81 : x
  2. Step 2: Convert to fraction form
    139,468.17/192,466.34 = 75,805.81/x
  3. Step 3: Cross multiply
    139,468.17x = 192,466.34 × 75,805.81
  4. Step 4: Simplify right side
    139,468.17x = 14,590,066,801.44
  5. Step 5: Solve for x
    x = 14,590,066,801.44/139,468.17
  6. Step 6: Final answer
    x = 104,612.16

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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.