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Finding the Fourth Proportional to 186,770.40, 279,989.13 and 68,414.03

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Solution

The fourth proportional to 186,770.40, 279,989.13 and 68,414.03 is: 102,560.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,770.40 : 279,989.13 = 68,414.03 : x
  2. Step 2: Convert to fraction form
    186,770.40/279,989.13 = 68,414.03/x
  3. Step 3: Cross multiply
    186,770.40x = 279,989.13 × 68,414.03
  4. Step 4: Simplify right side
    186,770.40x = 19,155,184,739.49
  5. Step 5: Solve for x
    x = 19,155,184,739.49/186,770.40
  6. Step 6: Final answer
    x = 102,560.07

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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.