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Finding the Fourth Proportional to 186,670.31, 279,892.87 and 74,367.86

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Solution

The fourth proportional to 186,670.31, 279,892.87 and 74,367.86 is: 111,506.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,670.31 : 279,892.87 = 74,367.86 : x
  2. Step 2: Convert to fraction form
    186,670.31/279,892.87 = 74,367.86/x
  3. Step 3: Cross multiply
    186,670.31x = 279,892.87 × 74,367.86
  4. Step 4: Simplify right side
    186,670.31x = 20,815,032,185.77
  5. Step 5: Solve for x
    x = 20,815,032,185.77/186,670.31
  6. Step 6: Final answer
    x = 111,506.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.