Home / 130,556.70-180,153.99-76,858.56

Finding the Fourth Proportional to 130,556.70, 180,153.99 and 76,858.56

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Solution

The fourth proportional to 130,556.70, 180,153.99 and 76,858.56 is: 106,056.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,556.70 : 180,153.99 = 76,858.56 : x
  2. Step 2: Convert to fraction form
    130,556.70/180,153.99 = 76,858.56/x
  3. Step 3: Cross multiply
    130,556.70x = 180,153.99 × 76,858.56
  4. Step 4: Simplify right side
    130,556.70x = 13,846,376,249.65
  5. Step 5: Solve for x
    x = 13,846,376,249.65/130,556.70
  6. Step 6: Final answer
    x = 106,056.42

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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.