Home / 104,257.35-143,890.51-66,020.39

Finding the Fourth Proportional to 104,257.35, 143,890.51 and 66,020.39

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Solution

The fourth proportional to 104,257.35, 143,890.51 and 66,020.39 is: 91,117.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,257.35 : 143,890.51 = 66,020.39 : x
  2. Step 2: Convert to fraction form
    104,257.35/143,890.51 = 66,020.39/x
  3. Step 3: Cross multiply
    104,257.35x = 143,890.51 × 66,020.39
  4. Step 4: Simplify right side
    104,257.35x = 9,499,707,587.50
  5. Step 5: Solve for x
    x = 9,499,707,587.50/104,257.35
  6. Step 6: Final answer
    x = 91,117.87

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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.