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Finding the Fourth Proportional to 139,969,772.70, 209,954,659.05 and 139,969,772.70

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Solution

The fourth proportional to 139,969,772.70, 209,954,659.05 and 139,969,772.70 is: 209,954,659.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,969,772.70 : 209,954,659.05 = 139,969,772.70 : x
  2. Step 2: Convert to fraction form
    139,969,772.70/209,954,659.05 = 139,969,772.70/x
  3. Step 3: Cross multiply
    139,969,772.70x = 209,954,659.05 × 139,969,772.70
  4. Step 4: Simplify right side
    139,969,772.70x = 29,387,305,904,534,496
  5. Step 5: Solve for x
    x = 29,387,305,904,534,496/139,969,772.70
  6. Step 6: Final answer
    x = 209,954,659.05

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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.