Home / 208,278,074.70-287,453,042.33-128,918,608.61

Finding the Fourth Proportional to 208,278,074.70, 287,453,042.33 and 128,918,608.61

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Solution

The fourth proportional to 208,278,074.70, 287,453,042.33 and 128,918,608.61 is: 177,925,815.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,278,074.70 : 287,453,042.33 = 128,918,608.61 : x
  2. Step 2: Convert to fraction form
    208,278,074.70/287,453,042.33 = 128,918,608.61/x
  3. Step 3: Cross multiply
    208,278,074.70x = 287,453,042.33 × 128,918,608.61
  4. Step 4: Simplify right side
    208,278,074.70x = 37,058,046,255,813,176
  5. Step 5: Solve for x
    x = 37,058,046,255,813,176/208,278,074.70
  6. Step 6: Final answer
    x = 177,925,815.33

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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.