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Finding the Fourth Proportional to 139,969,197.70, 209,953,796.55 and 139,969,197.70

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Solution

The fourth proportional to 139,969,197.70, 209,953,796.55 and 139,969,197.70 is: 209,953,796.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,969,197.70 : 209,953,796.55 = 139,969,197.70 : x
  2. Step 2: Convert to fraction form
    139,969,197.70/209,953,796.55 = 139,969,197.70/x
  3. Step 3: Cross multiply
    139,969,197.70x = 209,953,796.55 × 139,969,197.70
  4. Step 4: Simplify right side
    139,969,197.70x = 29,387,064,457,172,528
  5. Step 5: Solve for x
    x = 29,387,064,457,172,528/139,969,197.70
  6. Step 6: Final answer
    x = 209,953,796.55

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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.