Home / 104,102.82-143,660.70-56,355.12

Finding the Fourth Proportional to 104,102.82, 143,660.70 and 56,355.12

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Solution

The fourth proportional to 104,102.82, 143,660.70 and 56,355.12 is: 77,769.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,102.82 : 143,660.70 = 56,355.12 : x
  2. Step 2: Convert to fraction form
    104,102.82/143,660.70 = 56,355.12/x
  3. Step 3: Cross multiply
    104,102.82x = 143,660.70 × 56,355.12
  4. Step 4: Simplify right side
    104,102.82x = 8,096,015,987.78
  5. Step 5: Solve for x
    x = 8,096,015,987.78/104,102.82
  6. Step 6: Final answer
    x = 77,769.42

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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.