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Finding the Fourth Proportional to 186,376.70, 279,368.19 and 91,474.85

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Solution

The fourth proportional to 186,376.70, 279,368.19 and 91,474.85 is: 137,115.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,376.70 : 279,368.19 = 91,474.85 : x
  2. Step 2: Convert to fraction form
    186,376.70/279,368.19 = 91,474.85/x
  3. Step 3: Cross multiply
    186,376.70x = 279,368.19 × 91,474.85
  4. Step 4: Simplify right side
    186,376.70x = 25,555,163,275.02
  5. Step 5: Solve for x
    x = 25,555,163,275.02/186,376.70
  6. Step 6: Final answer
    x = 137,115.65

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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.