Home / 109,787.42-151,450.87-69,433.18

Finding the Fourth Proportional to 109,787.42, 151,450.87 and 69,433.18

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Solution

The fourth proportional to 109,787.42, 151,450.87 and 69,433.18 is: 95,782.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,787.42 : 151,450.87 = 69,433.18 : x
  2. Step 2: Convert to fraction form
    109,787.42/151,450.87 = 69,433.18/x
  3. Step 3: Cross multiply
    109,787.42x = 151,450.87 × 69,433.18
  4. Step 4: Simplify right side
    109,787.42x = 10,515,715,517.87
  5. Step 5: Solve for x
    x = 10,515,715,517.87/109,787.42
  6. Step 6: Final answer
    x = 95,782.52

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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.