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Finding the Fourth Proportional to 186,707.49, 279,900.81 and 68,354.34

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Solution

The fourth proportional to 186,707.49, 279,900.81 and 68,354.34 is: 102,472.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,707.49 : 279,900.81 = 68,354.34 : x
  2. Step 2: Convert to fraction form
    186,707.49/279,900.81 = 68,354.34/x
  3. Step 3: Cross multiply
    186,707.49x = 279,900.81 × 68,354.34
  4. Step 4: Simplify right side
    186,707.49x = 19,132,435,133.02
  5. Step 5: Solve for x
    x = 19,132,435,133.02/186,707.49
  6. Step 6: Final answer
    x = 102,472.78

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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.