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Finding the Fourth Proportional to 108,674.25, 149,797.25 and 85,666.58

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Solution

The fourth proportional to 108,674.25, 149,797.25 and 85,666.58 is: 118,083.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,674.25 : 149,797.25 = 85,666.58 : x
  2. Step 2: Convert to fraction form
    108,674.25/149,797.25 = 85,666.58/x
  3. Step 3: Cross multiply
    108,674.25x = 149,797.25 × 85,666.58
  4. Step 4: Simplify right side
    108,674.25x = 12,832,618,100.91
  5. Step 5: Solve for x
    x = 12,832,618,100.91/108,674.25
  6. Step 6: Final answer
    x = 118,083.34

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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.