Home / 103,661.72-143,057.78-58,342.64

Finding the Fourth Proportional to 103,661.72, 143,057.78 and 58,342.64

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Solution

The fourth proportional to 103,661.72, 143,057.78 and 58,342.64 is: 80,515.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,661.72 : 143,057.78 = 58,342.64 : x
  2. Step 2: Convert to fraction form
    103,661.72/143,057.78 = 58,342.64/x
  3. Step 3: Cross multiply
    103,661.72x = 143,057.78 × 58,342.64
  4. Step 4: Simplify right side
    103,661.72x = 8,346,368,291.99
  5. Step 5: Solve for x
    x = 8,346,368,291.99/103,661.72
  6. Step 6: Final answer
    x = 80,515.43

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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.