Home / 104,284.29-143,808.69-78,504.57

Finding the Fourth Proportional to 104,284.29, 143,808.69 and 78,504.57

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Solution

The fourth proportional to 104,284.29, 143,808.69 and 78,504.57 is: 108,258.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,284.29 : 143,808.69 = 78,504.57 : x
  2. Step 2: Convert to fraction form
    104,284.29/143,808.69 = 78,504.57/x
  3. Step 3: Cross multiply
    104,284.29x = 143,808.69 × 78,504.57
  4. Step 4: Simplify right side
    104,284.29x = 11,289,639,370.71
  5. Step 5: Solve for x
    x = 11,289,639,370.71/104,284.29
  6. Step 6: Final answer
    x = 108,258.29

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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.