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Finding the Fourth Proportional to 105,675.81, 145,879.16 and 73,969.17

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Solution

The fourth proportional to 105,675.81, 145,879.16 and 73,969.17 is: 102,110.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,675.81 : 145,879.16 = 73,969.17 : x
  2. Step 2: Convert to fraction form
    105,675.81/145,879.16 = 73,969.17/x
  3. Step 3: Cross multiply
    105,675.81x = 145,879.16 × 73,969.17
  4. Step 4: Simplify right side
    105,675.81x = 10,790,560,015.65
  5. Step 5: Solve for x
    x = 10,790,560,015.65/105,675.81
  6. Step 6: Final answer
    x = 102,110.03

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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.