Home / 108,321.41-149,521.13-74,442.05

Finding the Fourth Proportional to 108,321.41, 149,521.13 and 74,442.05

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Solution

The fourth proportional to 108,321.41, 149,521.13 and 74,442.05 is: 102,755.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,321.41 : 149,521.13 = 74,442.05 : x
  2. Step 2: Convert to fraction form
    108,321.41/149,521.13 = 74,442.05/x
  3. Step 3: Cross multiply
    108,321.41x = 149,521.13 × 74,442.05
  4. Step 4: Simplify right side
    108,321.41x = 11,130,659,155.56
  5. Step 5: Solve for x
    x = 11,130,659,155.56/108,321.41
  6. Step 6: Final answer
    x = 102,755.85

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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.