Home / 108,168.78-149,175.96-90,079.41

Finding the Fourth Proportional to 108,168.78, 149,175.96 and 90,079.41

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Solution

The fourth proportional to 108,168.78, 149,175.96 and 90,079.41 is: 124,228.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,168.78 : 149,175.96 = 90,079.41 : x
  2. Step 2: Convert to fraction form
    108,168.78/149,175.96 = 90,079.41/x
  3. Step 3: Cross multiply
    108,168.78x = 149,175.96 × 90,079.41
  4. Step 4: Simplify right side
    108,168.78x = 13,437,682,462.98
  5. Step 5: Solve for x
    x = 13,437,682,462.98/108,168.78
  6. Step 6: Final answer
    x = 124,228.84

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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.