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Finding the Fourth Proportional to 208,579.73, 287,842.02 and 113,086.67

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Solution

The fourth proportional to 208,579.73, 287,842.02 and 113,086.67 is: 156,060.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,579.73 : 287,842.02 = 113,086.67 : x
  2. Step 2: Convert to fraction form
    208,579.73/287,842.02 = 113,086.67/x
  3. Step 3: Cross multiply
    208,579.73x = 287,842.02 × 113,086.67
  4. Step 4: Simplify right side
    208,579.73x = 32,551,095,527.87
  5. Step 5: Solve for x
    x = 32,551,095,527.87/208,579.73
  6. Step 6: Final answer
    x = 156,060.68

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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.