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Finding the Fourth Proportional to 108,264.88, 149,435.72 and 74,278.90

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Solution

The fourth proportional to 108,264.88, 149,435.72 and 74,278.90 is: 102,525.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,264.88 : 149,435.72 = 74,278.90 : x
  2. Step 2: Convert to fraction form
    108,264.88/149,435.72 = 74,278.90/x
  3. Step 3: Cross multiply
    108,264.88x = 149,435.72 × 74,278.90
  4. Step 4: Simplify right side
    108,264.88x = 11,099,920,902.31
  5. Step 5: Solve for x
    x = 11,099,920,902.31/108,264.88
  6. Step 6: Final answer
    x = 102,525.59

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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.