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Finding the Fourth Proportional to 212,079.67, 318,166.58 and 69,969.02

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Solution

The fourth proportional to 212,079.67, 318,166.58 and 69,969.02 is: 104,969.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,079.67 : 318,166.58 = 69,969.02 : x
  2. Step 2: Convert to fraction form
    212,079.67/318,166.58 = 69,969.02/x
  3. Step 3: Cross multiply
    212,079.67x = 318,166.58 × 69,969.02
  4. Step 4: Simplify right side
    212,079.67x = 22,261,802,383.44
  5. Step 5: Solve for x
    x = 22,261,802,383.44/212,079.67
  6. Step 6: Final answer
    x = 104,969.06

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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.