Home / 108,636.90-149,638.50-76,750.44

Finding the Fourth Proportional to 108,636.90, 149,638.50 and 76,750.44

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Solution

The fourth proportional to 108,636.90, 149,638.50 and 76,750.44 is: 105,717.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,636.90 : 149,638.50 = 76,750.44 : x
  2. Step 2: Convert to fraction form
    108,636.90/149,638.50 = 76,750.44/x
  3. Step 3: Cross multiply
    108,636.90x = 149,638.50 × 76,750.44
  4. Step 4: Simplify right side
    108,636.90x = 11,484,820,715.94
  5. Step 5: Solve for x
    x = 11,484,820,715.94/108,636.90
  6. Step 6: Final answer
    x = 105,717.49

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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.