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Finding the Fourth Proportional to 139,444.77, 209,253.02 and 55,190.60

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Solution

The fourth proportional to 139,444.77, 209,253.02 and 55,190.60 is: 82,819.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,444.77 : 209,253.02 = 55,190.60 : x
  2. Step 2: Convert to fraction form
    139,444.77/209,253.02 = 55,190.60/x
  3. Step 3: Cross multiply
    139,444.77x = 209,253.02 × 55,190.60
  4. Step 4: Simplify right side
    139,444.77x = 11,548,798,403.39
  5. Step 5: Solve for x
    x = 11,548,798,403.39/139,444.77
  6. Step 6: Final answer
    x = 82,819.87

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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.