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Finding the Fourth Proportional to 139,968,276.45, 209,952,414.68 and 49,101,050.85

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Solution

The fourth proportional to 139,968,276.45, 209,952,414.68 and 49,101,050.85 is: 73,651,576.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,276.45 : 209,952,414.68 = 49,101,050.85 : x
  2. Step 2: Convert to fraction form
    139,968,276.45/209,952,414.68 = 49,101,050.85/x
  3. Step 3: Cross multiply
    139,968,276.45x = 209,952,414.68 × 49,101,050.85
  4. Step 4: Simplify right side
    139,968,276.45x = 10,308,884,189,037,462
  5. Step 5: Solve for x
    x = 10,308,884,189,037,462/139,968,276.45
  6. Step 6: Final answer
    x = 73,651,576.28

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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.