Home / 208,204.38-312,328.53-66,069.83

Finding the Fourth Proportional to 208,204.38, 312,328.53 and 66,069.83

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Solution

The fourth proportional to 208,204.38, 312,328.53 and 66,069.83 is: 99,111.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,204.38 : 312,328.53 = 66,069.83 : x
  2. Step 2: Convert to fraction form
    208,204.38/312,328.53 = 66,069.83/x
  3. Step 3: Cross multiply
    208,204.38x = 312,328.53 × 66,069.83
  4. Step 4: Simplify right side
    208,204.38x = 20,635,491,319.61
  5. Step 5: Solve for x
    x = 20,635,491,319.61/208,204.38
  6. Step 6: Final answer
    x = 99,111.71

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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.