Home / 208,579.87-287,840.85-113,086.61

Finding the Fourth Proportional to 208,579.87, 287,840.85 and 113,086.61

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Solution

The fourth proportional to 208,579.87, 287,840.85 and 113,086.61 is: 156,059.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,579.87 : 287,840.85 = 113,086.61 : x
  2. Step 2: Convert to fraction form
    208,579.87/287,840.85 = 113,086.61/x
  3. Step 3: Cross multiply
    208,579.87x = 287,840.85 × 113,086.61
  4. Step 4: Simplify right side
    208,579.87x = 32,550,943,941.38
  5. Step 5: Solve for x
    x = 32,550,943,941.38/208,579.87
  6. Step 6: Final answer
    x = 156,059.86

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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.