Home / 103,905.99-143,390.25-56,159.33

Finding the Fourth Proportional to 103,905.99, 143,390.25 and 56,159.33

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Solution

The fourth proportional to 103,905.99, 143,390.25 and 56,159.33 is: 77,499.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,905.99 : 143,390.25 = 56,159.33 : x
  2. Step 2: Convert to fraction form
    103,905.99/143,390.25 = 56,159.33/x
  3. Step 3: Cross multiply
    103,905.99x = 143,390.25 × 56,159.33
  4. Step 4: Simplify right side
    103,905.99x = 8,052,699,651.58
  5. Step 5: Solve for x
    x = 8,052,699,651.58/103,905.99
  6. Step 6: Final answer
    x = 77,499.86

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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.