Home / 108,584.03-162,878.40-76,431.71

Finding the Fourth Proportional to 108,584.03, 162,878.40 and 76,431.71

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Solution

The fourth proportional to 108,584.03, 162,878.40 and 76,431.71 is: 114,649.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,584.03 : 162,878.40 = 76,431.71 : x
  2. Step 2: Convert to fraction form
    108,584.03/162,878.40 = 76,431.71/x
  3. Step 3: Cross multiply
    108,584.03x = 162,878.40 × 76,431.71
  4. Step 4: Simplify right side
    108,584.03x = 12,449,073,819.67
  5. Step 5: Solve for x
    x = 12,449,073,819.67/108,584.03
  6. Step 6: Final answer
    x = 114,649.22

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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.