Home / 86,262.18-118,405.80-76,619.94

Finding the Fourth Proportional to 86,262.18, 118,405.80 and 76,619.94

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Solution

The fourth proportional to 86,262.18, 118,405.80 and 76,619.94 is: 105,170.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,262.18 : 118,405.80 = 76,619.94 : x
  2. Step 2: Convert to fraction form
    86,262.18/118,405.80 = 76,619.94/x
  3. Step 3: Cross multiply
    86,262.18x = 118,405.80 × 76,619.94
  4. Step 4: Simplify right side
    86,262.18x = 9,072,245,291.65
  5. Step 5: Solve for x
    x = 9,072,245,291.65/86,262.18
  6. Step 6: Final answer
    x = 105,170.60

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.