Home / 108,135.51-149,187.40-67,834.56

Finding the Fourth Proportional to 108,135.51, 149,187.40 and 67,834.56

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Solution

The fourth proportional to 108,135.51, 149,187.40 and 67,834.56 is: 93,586.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,135.51 : 149,187.40 = 67,834.56 : x
  2. Step 2: Convert to fraction form
    108,135.51/149,187.40 = 67,834.56/x
  3. Step 3: Cross multiply
    108,135.51x = 149,187.40 × 67,834.56
  4. Step 4: Simplify right side
    108,135.51x = 10,120,061,636.54
  5. Step 5: Solve for x
    x = 10,120,061,636.54/108,135.51
  6. Step 6: Final answer
    x = 93,586.85

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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.