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Finding the Fourth Proportional to 139,562.11, 192,590.22 and 75,899.89

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Solution

The fourth proportional to 139,562.11, 192,590.22 and 75,899.89 is: 104,738.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,562.11 : 192,590.22 = 75,899.89 : x
  2. Step 2: Convert to fraction form
    139,562.11/192,590.22 = 75,899.89/x
  3. Step 3: Cross multiply
    139,562.11x = 192,590.22 × 75,899.89
  4. Step 4: Simplify right side
    139,562.11x = 14,617,576,513.08
  5. Step 5: Solve for x
    x = 14,617,576,513.08/139,562.11
  6. Step 6: Final answer
    x = 104,738.86

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1.5x scale

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.