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Finding the Fourth Proportional to 108,202.88, 149,082.36 and 80,864.48

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Solution

The fourth proportional to 108,202.88, 149,082.36 and 80,864.48 is: 111,415.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,202.88 : 149,082.36 = 80,864.48 : x
  2. Step 2: Convert to fraction form
    108,202.88/149,082.36 = 80,864.48/x
  3. Step 3: Cross multiply
    108,202.88x = 149,082.36 × 80,864.48
  4. Step 4: Simplify right side
    108,202.88x = 12,055,467,518.57
  5. Step 5: Solve for x
    x = 12,055,467,518.57/108,202.88
  6. Step 6: Final answer
    x = 111,415.40

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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.