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Finding the Fourth Proportional to 139,794.85, 209,484.91 and 102,677.41

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Solution

The fourth proportional to 139,794.85, 209,484.91 and 102,677.41 is: 153,863.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,794.85 : 209,484.91 = 102,677.41 : x
  2. Step 2: Convert to fraction form
    139,794.85/209,484.91 = 102,677.41/x
  3. Step 3: Cross multiply
    139,794.85x = 209,484.91 × 102,677.41
  4. Step 4: Simplify right side
    139,794.85x = 21,509,367,992.88
  5. Step 5: Solve for x
    x = 21,509,367,992.88/139,794.85
  6. Step 6: Final answer
    x = 153,863.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.