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Finding the Fourth Proportional to 188,061.60, 281,912.60 and 69,701.20

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Solution

The fourth proportional to 188,061.60, 281,912.60 and 69,701.20 is: 104,485.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,061.60 : 281,912.60 = 69,701.20 : x
  2. Step 2: Convert to fraction form
    188,061.60/281,912.60 = 69,701.20/x
  3. Step 3: Cross multiply
    188,061.60x = 281,912.60 × 69,701.20
  4. Step 4: Simplify right side
    188,061.60x = 19,649,646,515.12
  5. Step 5: Solve for x
    x = 19,649,646,515.12/188,061.60
  6. Step 6: Final answer
    x = 104,485.16

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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.