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Finding the Fourth Proportional to 71,383.68, 107,698.82 and 71,186.85

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Solution

The fourth proportional to 71,383.68, 107,698.82 and 71,186.85 is: 107,401.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,383.68 : 107,698.82 = 71,186.85 : x
  2. Step 2: Convert to fraction form
    71,383.68/107,698.82 = 71,186.85/x
  3. Step 3: Cross multiply
    71,383.68x = 107,698.82 × 71,186.85
  4. Step 4: Simplify right side
    71,383.68x = 7,666,739,388.58
  5. Step 5: Solve for x
    x = 7,666,739,388.58/71,383.68
  6. Step 6: Final answer
    x = 107,401.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.