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Finding the Fourth Proportional to 186,409.20, 279,364.32 and 67,968.84

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Solution

The fourth proportional to 186,409.20, 279,364.32 and 67,968.84 is: 101,862.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,409.20 : 279,364.32 = 67,968.84 : x
  2. Step 2: Convert to fraction form
    186,409.20/279,364.32 = 67,968.84/x
  3. Step 3: Cross multiply
    186,409.20x = 279,364.32 × 67,968.84
  4. Step 4: Simplify right side
    186,409.20x = 18,988,068,767.79
  5. Step 5: Solve for x
    x = 18,988,068,767.79/186,409.20
  6. Step 6: Final answer
    x = 101,862.29

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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.