Home / 115,063.49-158,705.83-76,803.75

Finding the Fourth Proportional to 115,063.49, 158,705.83 and 76,803.75

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Solution

The fourth proportional to 115,063.49, 158,705.83 and 76,803.75 is: 105,934.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,063.49 : 158,705.83 = 76,803.75 : x
  2. Step 2: Convert to fraction form
    115,063.49/158,705.83 = 76,803.75/x
  3. Step 3: Cross multiply
    115,063.49x = 158,705.83 × 76,803.75
  4. Step 4: Simplify right side
    115,063.49x = 12,189,202,698.85
  5. Step 5: Solve for x
    x = 12,189,202,698.85/115,063.49
  6. Step 6: Final answer
    x = 105,934.58

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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.