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Finding the Fourth Proportional to 113,318,673.70, 169,978,010.55 and 72,504,004.90

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Solution

The fourth proportional to 113,318,673.70, 169,978,010.55 and 72,504,004.90 is: 108,756,007.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,318,673.70 : 169,978,010.55 = 72,504,004.90 : x
  2. Step 2: Convert to fraction form
    113,318,673.70/169,978,010.55 = 72,504,004.90/x
  3. Step 3: Cross multiply
    113,318,673.70x = 169,978,010.55 × 72,504,004.90
  4. Step 4: Simplify right side
    113,318,673.70x = 12,324,086,509,809,454
  5. Step 5: Solve for x
    x = 12,324,086,509,809,454/113,318,673.70
  6. Step 6: Final answer
    x = 108,756,007.35

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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.