Home / 103,805.40-143,221.80-58,467.56

Finding the Fourth Proportional to 103,805.40, 143,221.80 and 58,467.56

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Solution

The fourth proportional to 103,805.40, 143,221.80 and 58,467.56 is: 80,668.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,805.40 : 143,221.80 = 58,467.56 : x
  2. Step 2: Convert to fraction form
    103,805.40/143,221.80 = 58,467.56/x
  3. Step 3: Cross multiply
    103,805.40x = 143,221.80 × 58,467.56
  4. Step 4: Simplify right side
    103,805.40x = 8,373,829,184.81
  5. Step 5: Solve for x
    x = 8,373,829,184.81/103,805.40
  6. Step 6: Final answer
    x = 80,668.53

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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.