Home / 108,786.90-163,068.09-45,643.69

Finding the Fourth Proportional to 108,786.90, 163,068.09 and 45,643.69

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Solution

The fourth proportional to 108,786.90, 163,068.09 and 45,643.69 is: 68,418.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,786.90 : 163,068.09 = 45,643.69 : x
  2. Step 2: Convert to fraction form
    108,786.90/163,068.09 = 45,643.69/x
  3. Step 3: Cross multiply
    108,786.90x = 163,068.09 × 45,643.69
  4. Step 4: Simplify right side
    108,786.90x = 7,443,029,348.85
  5. Step 5: Solve for x
    x = 7,443,029,348.85/108,786.90
  6. Step 6: Final answer
    x = 68,418.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.