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Finding the Fourth Proportional to 186,603.20, 279,969.60 and 81,497.60

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Solution

The fourth proportional to 186,603.20, 279,969.60 and 81,497.60 is: 122,274.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,603.20 : 279,969.60 = 81,497.60 : x
  2. Step 2: Convert to fraction form
    186,603.20/279,969.60 = 81,497.60/x
  3. Step 3: Cross multiply
    186,603.20x = 279,969.60 × 81,497.60
  4. Step 4: Simplify right side
    186,603.20x = 22,816,850,472.96
  5. Step 5: Solve for x
    x = 22,816,850,472.96/186,603.20
  6. Step 6: Final answer
    x = 122,274.70

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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.