Home / 108,629.79-149,752.12-76,265.88

Finding the Fourth Proportional to 108,629.79, 149,752.12 and 76,265.88

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Solution

The fourth proportional to 108,629.79, 149,752.12 and 76,265.88 is: 105,136.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,629.79 : 149,752.12 = 76,265.88 : x
  2. Step 2: Convert to fraction form
    108,629.79/149,752.12 = 76,265.88/x
  3. Step 3: Cross multiply
    108,629.79x = 149,752.12 × 76,265.88
  4. Step 4: Simplify right side
    108,629.79x = 11,420,977,213.67
  5. Step 5: Solve for x
    x = 11,420,977,213.67/108,629.79
  6. Step 6: Final answer
    x = 105,136.70

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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.