Home / 208,074,913.80-312,017,892.30-78,639,505.80

Finding the Fourth Proportional to 208,074,913.80, 312,017,892.30 and 78,639,505.80

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Solution

The fourth proportional to 208,074,913.80, 312,017,892.30 and 78,639,505.80 is: 117,923,551.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,074,913.80 : 312,017,892.30 = 78,639,505.80 : x
  2. Step 2: Convert to fraction form
    208,074,913.80/312,017,892.30 = 78,639,505.80/x
  3. Step 3: Cross multiply
    208,074,913.80x = 312,017,892.30 × 78,639,505.80
  4. Step 4: Simplify right side
    208,074,913.80x = 24,536,932,851,229,624
  5. Step 5: Solve for x
    x = 24,536,932,851,229,624/208,074,913.80
  6. Step 6: Final answer
    x = 117,923,551.68

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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.