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Finding the Fourth Proportional to 139,605.93, 192,657.66 and 75,943.89

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Solution

The fourth proportional to 139,605.93, 192,657.66 and 75,943.89 is: 104,803.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,605.93 : 192,657.66 = 75,943.89 : x
  2. Step 2: Convert to fraction form
    139,605.93/192,657.66 = 75,943.89/x
  3. Step 3: Cross multiply
    139,605.93x = 192,657.66 × 75,943.89
  4. Step 4: Simplify right side
    139,605.93x = 14,631,172,138.70
  5. Step 5: Solve for x
    x = 14,631,172,138.70/139,605.93
  6. Step 6: Final answer
    x = 104,803.37

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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.