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Finding the Fourth Proportional to 139,675.88, 209,408.22 and 69,604.68

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Solution

The fourth proportional to 139,675.88, 209,408.22 and 69,604.68 is: 104,354.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,675.88 : 209,408.22 = 69,604.68 : x
  2. Step 2: Convert to fraction form
    139,675.88/209,408.22 = 69,604.68/x
  3. Step 3: Cross multiply
    139,675.88x = 209,408.22 × 69,604.68
  4. Step 4: Simplify right side
    139,675.88x = 14,575,792,142.47
  5. Step 5: Solve for x
    x = 14,575,792,142.47/139,675.88
  6. Step 6: Final answer
    x = 104,354.40

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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.