Home / 139,324.38-208,920.69-53,975.21

Finding the Fourth Proportional to 139,324.38, 208,920.69 and 53,975.21

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Solution

The fourth proportional to 139,324.38, 208,920.69 and 53,975.21 is: 80,937.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,324.38 : 208,920.69 = 53,975.21 : x
  2. Step 2: Convert to fraction form
    139,324.38/208,920.69 = 53,975.21/x
  3. Step 3: Cross multiply
    139,324.38x = 208,920.69 × 53,975.21
  4. Step 4: Simplify right side
    139,324.38x = 11,276,537,848.96
  5. Step 5: Solve for x
    x = 11,276,537,848.96/139,324.38
  6. Step 6: Final answer
    x = 80,937.29

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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.