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Finding the Fourth Proportional to 139,720.44, 192,814.23 and 76,058.71

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Solution

The fourth proportional to 139,720.44, 192,814.23 and 76,058.71 is: 104,961.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,720.44 : 192,814.23 = 76,058.71 : x
  2. Step 2: Convert to fraction form
    139,720.44/192,814.23 = 76,058.71/x
  3. Step 3: Cross multiply
    139,720.44x = 192,814.23 × 76,058.71
  4. Step 4: Simplify right side
    139,720.44x = 14,665,201,603.44
  5. Step 5: Solve for x
    x = 14,665,201,603.44/139,720.44
  6. Step 6: Final answer
    x = 104,961.03

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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.