Home / 108,090.12-149,205.24-85,060.20

Finding the Fourth Proportional to 108,090.12, 149,205.24 and 85,060.20

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Solution

The fourth proportional to 108,090.12, 149,205.24 and 85,060.20 is: 117,415.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,090.12 : 149,205.24 = 85,060.20 : x
  2. Step 2: Convert to fraction form
    108,090.12/149,205.24 = 85,060.20/x
  3. Step 3: Cross multiply
    108,090.12x = 149,205.24 × 85,060.20
  4. Step 4: Simplify right side
    108,090.12x = 12,691,427,555.45
  5. Step 5: Solve for x
    x = 12,691,427,555.45/108,090.12
  6. Step 6: Final answer
    x = 117,415.24

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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.