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Finding the Fourth Proportional to 139,363.54, 192,321.53 and 75,700.89

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Solution

The fourth proportional to 139,363.54, 192,321.53 and 75,700.89 is: 104,467.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,363.54 : 192,321.53 = 75,700.89 : x
  2. Step 2: Convert to fraction form
    139,363.54/192,321.53 = 75,700.89/x
  3. Step 3: Cross multiply
    139,363.54x = 192,321.53 × 75,700.89
  4. Step 4: Simplify right side
    139,363.54x = 14,558,910,987.16
  5. Step 5: Solve for x
    x = 14,558,910,987.16/139,363.54
  6. Step 6: Final answer
    x = 104,467.14

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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.