Home / 208,112,976.30-287,172,734.70-115,270,233.60

Finding the Fourth Proportional to 208,112,976.30, 287,172,734.70 and 115,270,233.60

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Solution

The fourth proportional to 208,112,976.30, 287,172,734.70 and 115,270,233.60 is: 159,060,087.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,112,976.30 : 287,172,734.70 = 115,270,233.60 : x
  2. Step 2: Convert to fraction form
    208,112,976.30/287,172,734.70 = 115,270,233.60/x
  3. Step 3: Cross multiply
    208,112,976.30x = 287,172,734.70 × 115,270,233.60
  4. Step 4: Simplify right side
    208,112,976.30x = 33,102,468,213,928,992
  5. Step 5: Solve for x
    x = 33,102,468,213,928,992/208,112,976.30
  6. Step 6: Final answer
    x = 159,060,087.47

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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.