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Finding the Fourth Proportional to 139,658.20, 209,469.60 and 44,880.76

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Solution

The fourth proportional to 139,658.20, 209,469.60 and 44,880.76 is: 67,315.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,658.20 : 209,469.60 = 44,880.76 : x
  2. Step 2: Convert to fraction form
    139,658.20/209,469.60 = 44,880.76/x
  3. Step 3: Cross multiply
    139,658.20x = 209,469.60 × 44,880.76
  4. Step 4: Simplify right side
    139,658.20x = 9,401,154,844.90
  5. Step 5: Solve for x
    x = 9,401,154,844.90/139,658.20
  6. Step 6: Final answer
    x = 67,315.45

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1.5x scale

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.