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Finding the Fourth Proportional to 104,881.56, 144,742.66 and 78,993.75

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Solution

The fourth proportional to 104,881.56, 144,742.66 and 78,993.75 is: 109,015.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,881.56 : 144,742.66 = 78,993.75 : x
  2. Step 2: Convert to fraction form
    104,881.56/144,742.66 = 78,993.75/x
  3. Step 3: Cross multiply
    104,881.56x = 144,742.66 × 78,993.75
  4. Step 4: Simplify right side
    104,881.56x = 11,433,765,498.38
  5. Step 5: Solve for x
    x = 11,433,765,498.38/104,881.56
  6. Step 6: Final answer
    x = 109,015.97

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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.