Home / 108,634.90-149,635.74-76,748.44

Finding the Fourth Proportional to 108,634.90, 149,635.74 and 76,748.44

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Solution

The fourth proportional to 108,634.90, 149,635.74 and 76,748.44 is: 105,714.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,634.90 : 149,635.74 = 76,748.44 : x
  2. Step 2: Convert to fraction form
    108,634.90/149,635.74 = 76,748.44/x
  3. Step 3: Cross multiply
    108,634.90x = 149,635.74 × 76,748.44
  4. Step 4: Simplify right side
    108,634.90x = 11,484,309,613.25
  5. Step 5: Solve for x
    x = 11,484,309,613.25/108,634.90
  6. Step 6: Final answer
    x = 105,714.73

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1.5x scale

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.