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Finding the Fourth Proportional to 139,354.53, 209,000.26 and 64,433.85

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Solution

The fourth proportional to 139,354.53, 209,000.26 and 64,433.85 is: 96,636.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,354.53 : 209,000.26 = 64,433.85 : x
  2. Step 2: Convert to fraction form
    139,354.53/209,000.26 = 64,433.85/x
  3. Step 3: Cross multiply
    139,354.53x = 209,000.26 × 64,433.85
  4. Step 4: Simplify right side
    139,354.53x = 13,466,691,402.80
  5. Step 5: Solve for x
    x = 13,466,691,402.80/139,354.53
  6. Step 6: Final answer
    x = 96,636.19

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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.