Home / 126,040.87-173,929.53-78,293.35

Finding the Fourth Proportional to 126,040.87, 173,929.53 and 78,293.35

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Solution

The fourth proportional to 126,040.87, 173,929.53 and 78,293.35 is: 108,040.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,040.87 : 173,929.53 = 78,293.35 : x
  2. Step 2: Convert to fraction form
    126,040.87/173,929.53 = 78,293.35/x
  3. Step 3: Cross multiply
    126,040.87x = 173,929.53 × 78,293.35
  4. Step 4: Simplify right side
    126,040.87x = 13,617,525,567.63
  5. Step 5: Solve for x
    x = 13,617,525,567.63/126,040.87
  6. Step 6: Final answer
    x = 108,040.56

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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.