Home / 140,861.96-194,391-77,198.36

Finding the Fourth Proportional to 140,861.96, 194,391 and 77,198.36

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Solution

The fourth proportional to 140,861.96, 194,391 and 77,198.36 is: 106,534.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,861.96 : 194,391 = 77,198.36 : x
  2. Step 2: Convert to fraction form
    140,861.96/194,391 = 77,198.36/x
  3. Step 3: Cross multiply
    140,861.96x = 194,391 × 77,198.36
  4. Step 4: Simplify right side
    140,861.96x = 15,006,666,398.76
  5. Step 5: Solve for x
    x = 15,006,666,398.76/140,861.96
  6. Step 6: Final answer
    x = 106,534.56

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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.