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Finding the Fourth Proportional to 186,503.36, 279,798.78 and 74,189.97

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Solution

The fourth proportional to 186,503.36, 279,798.78 and 74,189.97 is: 111,302.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,503.36 : 279,798.78 = 74,189.97 : x
  2. Step 2: Convert to fraction form
    186,503.36/279,798.78 = 74,189.97/x
  3. Step 3: Cross multiply
    186,503.36x = 279,798.78 × 74,189.97
  4. Step 4: Simplify right side
    186,503.36x = 20,758,263,372.45
  5. Step 5: Solve for x
    x = 20,758,263,372.45/186,503.36
  6. Step 6: Final answer
    x = 111,302.36

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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.