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Finding the Fourth Proportional to 139,968,018.70, 209,952,028.05 and 49,100,793.10

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Solution

The fourth proportional to 139,968,018.70, 209,952,028.05 and 49,100,793.10 is: 73,651,189.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,018.70 : 209,952,028.05 = 49,100,793.10 : x
  2. Step 2: Convert to fraction form
    139,968,018.70/209,952,028.05 = 49,100,793.10/x
  3. Step 3: Cross multiply
    139,968,018.70x = 209,952,028.05 × 49,100,793.10
  4. Step 4: Simplify right side
    139,968,018.70x = 10,308,811,090,208,448
  5. Step 5: Solve for x
    x = 10,308,811,090,208,448/139,968,018.70
  6. Step 6: Final answer
    x = 73,651,189.65

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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.