Home / 139,969,400.70-209,891,115.45-53,679,128.70

Finding the Fourth Proportional to 139,969,400.70, 209,891,115.45 and 53,679,128.70

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Solution

The fourth proportional to 139,969,400.70, 209,891,115.45 and 53,679,128.70 is: 80,494,537.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,969,400.70 : 209,891,115.45 = 53,679,128.70 : x
  2. Step 2: Convert to fraction form
    139,969,400.70/209,891,115.45 = 53,679,128.70/x
  3. Step 3: Cross multiply
    139,969,400.70x = 209,891,115.45 × 53,679,128.70
  4. Step 4: Simplify right side
    139,969,400.70x = 11,266,772,199,227,108
  5. Step 5: Solve for x
    x = 11,266,772,199,227,108/139,969,400.70
  6. Step 6: Final answer
    x = 80,494,537.68

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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.