Home / 139,794,426.80-209,691,640.20-79,328,250.80

Finding the Fourth Proportional to 139,794,426.80, 209,691,640.20 and 79,328,250.80

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Solution

The fourth proportional to 139,794,426.80, 209,691,640.20 and 79,328,250.80 is: 118,992,376.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,794,426.80 : 209,691,640.20 = 79,328,250.80 : x
  2. Step 2: Convert to fraction form
    139,794,426.80/209,691,640.20 = 79,328,250.80/x
  3. Step 3: Cross multiply
    139,794,426.80x = 209,691,640.20 × 79,328,250.80
  4. Step 4: Simplify right side
    139,794,426.80x = 16,634,471,024,448,960
  5. Step 5: Solve for x
    x = 16,634,471,024,448,960/139,794,426.80
  6. Step 6: Final answer
    x = 118,992,376.20

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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.