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Finding the Fourth Proportional to 139,152.53, 208,598.93 and 54,913.39

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Solution

The fourth proportional to 139,152.53, 208,598.93 and 54,913.39 is: 82,318.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,152.53 : 208,598.93 = 54,913.39 : x
  2. Step 2: Convert to fraction form
    139,152.53/208,598.93 = 54,913.39/x
  3. Step 3: Cross multiply
    139,152.53x = 208,598.93 × 54,913.39
  4. Step 4: Simplify right side
    139,152.53x = 11,454,873,353.68
  5. Step 5: Solve for x
    x = 11,454,873,353.68/139,152.53
  6. Step 6: Final answer
    x = 82,318.83

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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.