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Finding the Fourth Proportional to 139,134.44, 208,718.30 and 49,158.53

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Solution

The fourth proportional to 139,134.44, 208,718.30 and 49,158.53 is: 73,743.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,134.44 : 208,718.30 = 49,158.53 : x
  2. Step 2: Convert to fraction form
    139,134.44/208,718.30 = 49,158.53/x
  3. Step 3: Cross multiply
    139,134.44x = 208,718.30 × 49,158.53
  4. Step 4: Simplify right side
    139,134.44x = 10,260,283,522.71
  5. Step 5: Solve for x
    x = 10,260,283,522.71/139,134.44
  6. Step 6: Final answer
    x = 73,743.67

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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.