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Finding the Fourth Proportional to 186,649.40, 279,974.10 and 68,332.70

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Solution

The fourth proportional to 186,649.40, 279,974.10 and 68,332.70 is: 102,499.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,649.40 : 279,974.10 = 68,332.70 : x
  2. Step 2: Convert to fraction form
    186,649.40/279,974.10 = 68,332.70/x
  3. Step 3: Cross multiply
    186,649.40x = 279,974.10 × 68,332.70
  4. Step 4: Simplify right side
    186,649.40x = 19,131,386,183.07
  5. Step 5: Solve for x
    x = 19,131,386,183.07/186,649.40
  6. Step 6: Final answer
    x = 102,499.05

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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.