Home / 103,918.34-143,407.97-56,171.58

Finding the Fourth Proportional to 103,918.34, 143,407.97 and 56,171.58

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Solution

The fourth proportional to 103,918.34, 143,407.97 and 56,171.58 is: 77,517.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,918.34 : 143,407.97 = 56,171.58 : x
  2. Step 2: Convert to fraction form
    103,918.34/143,407.97 = 56,171.58/x
  3. Step 3: Cross multiply
    103,918.34x = 143,407.97 × 56,171.58
  4. Step 4: Simplify right side
    103,918.34x = 8,055,451,651.50
  5. Step 5: Solve for x
    x = 8,055,451,651.50/103,918.34
  6. Step 6: Final answer
    x = 77,517.13

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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.