Home / 208,179,765.78-287,289,787.95-115,361,823.66

Finding the Fourth Proportional to 208,179,765.78, 287,289,787.95 and 115,361,823.66

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Solution

The fourth proportional to 208,179,765.78, 287,289,787.95 and 115,361,823.66 is: 159,200,264.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,179,765.78 : 287,289,787.95 = 115,361,823.66 : x
  2. Step 2: Convert to fraction form
    208,179,765.78/287,289,787.95 = 115,361,823.66/x
  3. Step 3: Cross multiply
    208,179,765.78x = 287,289,787.95 × 115,361,823.66
  4. Step 4: Simplify right side
    208,179,765.78x = 33,142,273,856,806,692
  5. Step 5: Solve for x
    x = 33,142,273,856,806,692/208,179,765.78
  6. Step 6: Final answer
    x = 159,200,264.89

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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.