Home / 208,074,912.30-312,017,890.05-78,639,504.30

Finding the Fourth Proportional to 208,074,912.30, 312,017,890.05 and 78,639,504.30

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Solution

The fourth proportional to 208,074,912.30, 312,017,890.05 and 78,639,504.30 is: 117,923,549.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,074,912.30 : 312,017,890.05 = 78,639,504.30 : x
  2. Step 2: Convert to fraction form
    208,074,912.30/312,017,890.05 = 78,639,504.30/x
  3. Step 3: Cross multiply
    208,074,912.30x = 312,017,890.05 × 78,639,504.30
  4. Step 4: Simplify right side
    208,074,912.30x = 24,536,932,206,263,904
  5. Step 5: Solve for x
    x = 24,536,932,206,263,904/208,074,912.30
  6. Step 6: Final answer
    x = 117,923,549.43

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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.