Home / 108,176.26-149,186.24-90,086.88

Finding the Fourth Proportional to 108,176.26, 149,186.24 and 90,086.88

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Solution

The fourth proportional to 108,176.26, 149,186.24 and 90,086.88 is: 124,239.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,176.26 : 149,186.24 = 90,086.88 : x
  2. Step 2: Convert to fraction form
    108,176.26/149,186.24 = 90,086.88/x
  3. Step 3: Cross multiply
    108,176.26x = 149,186.24 × 90,086.88
  4. Step 4: Simplify right side
    108,176.26x = 13,439,722,900.53
  5. Step 5: Solve for x
    x = 13,439,722,900.53/108,176.26
  6. Step 6: Final answer
    x = 124,239.12

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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.