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Finding the Fourth Proportional to 139,561.11, 192,588.84 and 75,898.89

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Solution

The fourth proportional to 139,561.11, 192,588.84 and 75,898.89 is: 104,737.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,561.11 : 192,588.84 = 75,898.89 : x
  2. Step 2: Convert to fraction form
    139,561.11/192,588.84 = 75,898.89/x
  3. Step 3: Cross multiply
    139,561.11x = 192,588.84 × 75,898.89
  4. Step 4: Simplify right side
    139,561.11x = 14,617,279,182.39
  5. Step 5: Solve for x
    x = 14,617,279,182.39/139,561.11
  6. Step 6: Final answer
    x = 104,737.48

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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.