Home / 128,662,772.09-177,555,996.95-69,925,441.46

Finding the Fourth Proportional to 128,662,772.09, 177,555,996.95 and 69,925,441.46

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Solution

The fourth proportional to 128,662,772.09, 177,555,996.95 and 69,925,441.46 is: 96,497,854.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,662,772.09 : 177,555,996.95 = 69,925,441.46 : x
  2. Step 2: Convert to fraction form
    128,662,772.09/177,555,996.95 = 69,925,441.46/x
  3. Step 3: Cross multiply
    128,662,772.09x = 177,555,996.95 × 69,925,441.46
  4. Step 4: Simplify right side
    128,662,772.09x = 12,415,681,469,361,756
  5. Step 5: Solve for x
    x = 12,415,681,469,361,756/128,662,772.09
  6. Step 6: Final answer
    x = 96,497,854.57

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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.