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Finding the Fourth Proportional to 186,154.78, 278,986.80 and 73,773.68

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Solution

The fourth proportional to 186,154.78, 278,986.80 and 73,773.68 is: 110,563.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,154.78 : 278,986.80 = 73,773.68 : x
  2. Step 2: Convert to fraction form
    186,154.78/278,986.80 = 73,773.68/x
  3. Step 3: Cross multiply
    186,154.78x = 278,986.80 × 73,773.68
  4. Step 4: Simplify right side
    186,154.78x = 20,581,881,512.49
  5. Step 5: Solve for x
    x = 20,581,881,512.49/186,154.78
  6. Step 6: Final answer
    x = 110,563.27

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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.