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Finding the Fourth Proportional to 103,804.19, 143,249.77 and 56,057.53

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Solution

The fourth proportional to 103,804.19, 143,249.77 and 56,057.53 is: 77,359.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,804.19 : 143,249.77 = 56,057.53 : x
  2. Step 2: Convert to fraction form
    103,804.19/143,249.77 = 56,057.53/x
  3. Step 3: Cross multiply
    103,804.19x = 143,249.77 × 56,057.53
  4. Step 4: Simplify right side
    103,804.19x = 8,030,228,131.36
  5. Step 5: Solve for x
    x = 8,030,228,131.36/103,804.19
  6. Step 6: Final answer
    x = 77,359.39

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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.