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Finding the Fourth Proportional to 86,773.88, 119,880.71 and 74,157.63

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Solution

The fourth proportional to 86,773.88, 119,880.71 and 74,157.63 is: 102,450.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,773.88 : 119,880.71 = 74,157.63 : x
  2. Step 2: Convert to fraction form
    86,773.88/119,880.71 = 74,157.63/x
  3. Step 3: Cross multiply
    86,773.88x = 119,880.71 × 74,157.63
  4. Step 4: Simplify right side
    86,773.88x = 8,890,068,794.07
  5. Step 5: Solve for x
    x = 8,890,068,794.07/86,773.88
  6. Step 6: Final answer
    x = 102,450.97

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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.