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Finding the Fourth Proportional to 103,703.67, 143,103.65 and 58,379.31

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Solution

The fourth proportional to 103,703.67, 143,103.65 and 58,379.31 is: 80,559.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,703.67 : 143,103.65 = 58,379.31 : x
  2. Step 2: Convert to fraction form
    103,703.67/143,103.65 = 58,379.31/x
  3. Step 3: Cross multiply
    103,703.67x = 143,103.65 × 58,379.31
  4. Step 4: Simplify right side
    103,703.67x = 8,354,292,053.58
  5. Step 5: Solve for x
    x = 8,354,292,053.58/103,703.67
  6. Step 6: Final answer
    x = 80,559.27

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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.