Home / 208,913.20-313,369.08-51,139.60

Finding the Fourth Proportional to 208,913.20, 313,369.08 and 51,139.60

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Solution

The fourth proportional to 208,913.20, 313,369.08 and 51,139.60 is: 76,709.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,913.20 : 313,369.08 = 51,139.60 : x
  2. Step 2: Convert to fraction form
    208,913.20/313,369.08 = 51,139.60/x
  3. Step 3: Cross multiply
    208,913.20x = 313,369.08 × 51,139.60
  4. Step 4: Simplify right side
    208,913.20x = 16,025,569,403.57
  5. Step 5: Solve for x
    x = 16,025,569,403.57/208,913.20
  6. Step 6: Final answer
    x = 76,709.22

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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.