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Finding the Fourth Proportional to 139,519.80, 209,270.10 and 44,748.60

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Solution

The fourth proportional to 139,519.80, 209,270.10 and 44,748.60 is: 67,119.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,519.80 : 209,270.10 = 44,748.60 : x
  2. Step 2: Convert to fraction form
    139,519.80/209,270.10 = 44,748.60/x
  3. Step 3: Cross multiply
    139,519.80x = 209,270.10 × 44,748.60
  4. Step 4: Simplify right side
    139,519.80x = 9,364,543,996.86
  5. Step 5: Solve for x
    x = 9,364,543,996.86/139,519.80
  6. Step 6: Final answer
    x = 67,119.82

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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.