Home / 136,986.40-189,054.84-80,396.56

Finding the Fourth Proportional to 136,986.40, 189,054.84 and 80,396.56

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Solution

The fourth proportional to 136,986.40, 189,054.84 and 80,396.56 is: 110,955.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,986.40 : 189,054.84 = 80,396.56 : x
  2. Step 2: Convert to fraction form
    136,986.40/189,054.84 = 80,396.56/x
  3. Step 3: Cross multiply
    136,986.40x = 189,054.84 × 80,396.56
  4. Step 4: Simplify right side
    136,986.40x = 15,199,358,787.35
  5. Step 5: Solve for x
    x = 15,199,358,787.35/136,986.40
  6. Step 6: Final answer
    x = 110,955.24

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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.