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Finding the Fourth Proportional to 108,673.75, 149,796.56 and 85,666.08

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Solution

The fourth proportional to 108,673.75, 149,796.56 and 85,666.08 is: 118,082.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,673.75 : 149,796.56 = 85,666.08 : x
  2. Step 2: Convert to fraction form
    108,673.75/149,796.56 = 85,666.08/x
  3. Step 3: Cross multiply
    108,673.75x = 149,796.56 × 85,666.08
  4. Step 4: Simplify right side
    108,673.75x = 12,832,484,092.68
  5. Step 5: Solve for x
    x = 12,832,484,092.68/108,673.75
  6. Step 6: Final answer
    x = 118,082.65

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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.