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Finding the Fourth Proportional to 103,886.69, 143,481.85 and 69,836.13

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Solution

The fourth proportional to 103,886.69, 143,481.85 and 69,836.13 is: 96,453.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,886.69 : 143,481.85 = 69,836.13 : x
  2. Step 2: Convert to fraction form
    103,886.69/143,481.85 = 69,836.13/x
  3. Step 3: Cross multiply
    103,886.69x = 143,481.85 × 69,836.13
  4. Step 4: Simplify right side
    103,886.69x = 10,020,216,954.65
  5. Step 5: Solve for x
    x = 10,020,216,954.65/103,886.69
  6. Step 6: Final answer
    x = 96,453.33

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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.