Home / 120,639,562-166,469,274.44-67,704,128.40

Finding the Fourth Proportional to 120,639,562, 166,469,274.44 and 67,704,128.40

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Solution

The fourth proportional to 120,639,562, 166,469,274.44 and 67,704,128.40 is: 93,424,221.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,639,562 : 166,469,274.44 = 67,704,128.40 : x
  2. Step 2: Convert to fraction form
    120,639,562/166,469,274.44 = 67,704,128.40/x
  3. Step 3: Cross multiply
    120,639,562x = 166,469,274.44 × 67,704,128.40
  4. Step 4: Simplify right side
    120,639,562x = 11,270,657,131,340,598
  5. Step 5: Solve for x
    x = 11,270,657,131,340,598/120,639,562
  6. Step 6: Final answer
    x = 93,424,221.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.