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Finding the Fourth Proportional to 178,912.80, 268,135.92 and 73,612.80

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Solution

The fourth proportional to 178,912.80, 268,135.92 and 73,612.80 is: 110,323.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,912.80 : 268,135.92 = 73,612.80 : x
  2. Step 2: Convert to fraction form
    178,912.80/268,135.92 = 73,612.80/x
  3. Step 3: Cross multiply
    178,912.80x = 268,135.92 × 73,612.80
  4. Step 4: Simplify right side
    178,912.80x = 19,738,235,851.78
  5. Step 5: Solve for x
    x = 19,738,235,851.78/178,912.80
  6. Step 6: Final answer
    x = 110,323.22

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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.