Home / 103,767.48-143,143.20-69,371.64

Finding the Fourth Proportional to 103,767.48, 143,143.20 and 69,371.64

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Solution

The fourth proportional to 103,767.48, 143,143.20 and 69,371.64 is: 95,695.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,767.48 : 143,143.20 = 69,371.64 : x
  2. Step 2: Convert to fraction form
    103,767.48/143,143.20 = 69,371.64/x
  3. Step 3: Cross multiply
    103,767.48x = 143,143.20 × 69,371.64
  4. Step 4: Simplify right side
    103,767.48x = 9,930,078,538.85
  5. Step 5: Solve for x
    x = 9,930,078,538.85/103,767.48
  6. Step 6: Final answer
    x = 95,695.48

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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.