Home / 104,215.11-143,708.68-89,157.61

Finding the Fourth Proportional to 104,215.11, 143,708.68 and 89,157.61

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Solution

The fourth proportional to 104,215.11, 143,708.68 and 89,157.61 is: 122,944.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,215.11 : 143,708.68 = 89,157.61 : x
  2. Step 2: Convert to fraction form
    104,215.11/143,708.68 = 89,157.61/x
  3. Step 3: Cross multiply
    104,215.11x = 143,708.68 × 89,157.61
  4. Step 4: Simplify right side
    104,215.11x = 12,812,722,736.14
  5. Step 5: Solve for x
    x = 12,812,722,736.14/104,215.11
  6. Step 6: Final answer
    x = 122,944.97

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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.