Home / 139,969,400.20-209,891,114.70-53,679,128.20

Finding the Fourth Proportional to 139,969,400.20, 209,891,114.70 and 53,679,128.20

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Solution

The fourth proportional to 139,969,400.20, 209,891,114.70 and 53,679,128.20 is: 80,494,536.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,969,400.20 : 209,891,114.70 = 53,679,128.20 : x
  2. Step 2: Convert to fraction form
    139,969,400.20/209,891,114.70 = 53,679,128.20/x
  3. Step 3: Cross multiply
    139,969,400.20x = 209,891,114.70 × 53,679,128.20
  4. Step 4: Simplify right side
    139,969,400.20x = 11,266,772,054,022,204
  5. Step 5: Solve for x
    x = 11,266,772,054,022,204/139,969,400.20
  6. Step 6: Final answer
    x = 80,494,536.93

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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.