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Finding the Fourth Proportional to 130,361.99, 179,902.10 and 85,068.95

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Solution

The fourth proportional to 130,361.99, 179,902.10 and 85,068.95 is: 117,396.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,361.99 : 179,902.10 = 85,068.95 : x
  2. Step 2: Convert to fraction form
    130,361.99/179,902.10 = 85,068.95/x
  3. Step 3: Cross multiply
    130,361.99x = 179,902.10 × 85,068.95
  4. Step 4: Simplify right side
    130,361.99x = 15,304,082,324.45
  5. Step 5: Solve for x
    x = 15,304,082,324.45/130,361.99
  6. Step 6: Final answer
    x = 117,396.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.