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Finding the Fourth Proportional to 186,047.20, 279,135.60 and 80,941.60

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Solution

The fourth proportional to 186,047.20, 279,135.60 and 80,941.60 is: 121,440.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,047.20 : 279,135.60 = 80,941.60 : x
  2. Step 2: Convert to fraction form
    186,047.20/279,135.60 = 80,941.60/x
  3. Step 3: Cross multiply
    186,047.20x = 279,135.60 × 80,941.60
  4. Step 4: Simplify right side
    186,047.20x = 22,593,682,080.96
  5. Step 5: Solve for x
    x = 22,593,682,080.96/186,047.20
  6. Step 6: Final answer
    x = 121,440.59

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1.5x scale

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.