Home / 108,710.21-149,968.99-76,896.65

Finding the Fourth Proportional to 108,710.21, 149,968.99 and 76,896.65

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Solution

The fourth proportional to 108,710.21, 149,968.99 and 76,896.65 is: 106,081.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,710.21 : 149,968.99 = 76,896.65 : x
  2. Step 2: Convert to fraction form
    108,710.21/149,968.99 = 76,896.65/x
  3. Step 3: Cross multiply
    108,710.21x = 149,968.99 × 76,896.65
  4. Step 4: Simplify right side
    108,710.21x = 11,532,112,934.88
  5. Step 5: Solve for x
    x = 11,532,112,934.88/108,710.21
  6. Step 6: Final answer
    x = 106,081.23

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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.