Home / 112,516.44-155,112.48-76,660.56

Finding the Fourth Proportional to 112,516.44, 155,112.48 and 76,660.56

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Solution

The fourth proportional to 112,516.44, 155,112.48 and 76,660.56 is: 105,682.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,516.44 : 155,112.48 = 76,660.56 : x
  2. Step 2: Convert to fraction form
    112,516.44/155,112.48 = 76,660.56/x
  3. Step 3: Cross multiply
    112,516.44x = 155,112.48 × 76,660.56
  4. Step 4: Simplify right side
    112,516.44x = 11,891,009,579.79
  5. Step 5: Solve for x
    x = 11,891,009,579.79/112,516.44
  6. Step 6: Final answer
    x = 105,682.42

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1.5x scale

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.