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Finding the Fourth Proportional to 139,320.44, 208,926.12 and 49,328.40

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Solution

The fourth proportional to 139,320.44, 208,926.12 and 49,328.40 is: 73,973.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,320.44 : 208,926.12 = 49,328.40 : x
  2. Step 2: Convert to fraction form
    139,320.44/208,926.12 = 49,328.40/x
  3. Step 3: Cross multiply
    139,320.44x = 208,926.12 × 49,328.40
  4. Step 4: Simplify right side
    139,320.44x = 10,305,991,217.81
  5. Step 5: Solve for x
    x = 10,305,991,217.81/139,320.44
  6. Step 6: Final answer
    x = 73,973.29

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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.