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Finding the Fourth Proportional to 139,214.88, 192,115.53 and 75,551.31

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Solution

The fourth proportional to 139,214.88, 192,115.53 and 75,551.31 is: 104,260.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,214.88 : 192,115.53 = 75,551.31 : x
  2. Step 2: Convert to fraction form
    139,214.88/192,115.53 = 75,551.31/x
  3. Step 3: Cross multiply
    139,214.88x = 192,115.53 × 75,551.31
  4. Step 4: Simplify right side
    139,214.88x = 14,514,579,962.84
  5. Step 5: Solve for x
    x = 14,514,579,962.84/139,214.88
  6. Step 6: Final answer
    x = 104,260.26

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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.