Home / 103,859.45-143,326.12-56,112.79

Finding the Fourth Proportional to 103,859.45, 143,326.12 and 56,112.79

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Solution

The fourth proportional to 103,859.45, 143,326.12 and 56,112.79 is: 77,435.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,859.45 : 143,326.12 = 56,112.79 : x
  2. Step 2: Convert to fraction form
    103,859.45/143,326.12 = 56,112.79/x
  3. Step 3: Cross multiply
    103,859.45x = 143,326.12 × 56,112.79
  4. Step 4: Simplify right side
    103,859.45x = 8,042,427,974.48
  5. Step 5: Solve for x
    x = 8,042,427,974.48/103,859.45
  6. Step 6: Final answer
    x = 77,435.69

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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.