Home / 137,480.26-189,706.98-80,131.72

Finding the Fourth Proportional to 137,480.26, 189,706.98 and 80,131.72

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Solution

The fourth proportional to 137,480.26, 189,706.98 and 80,131.72 is: 110,572.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,480.26 : 189,706.98 = 80,131.72 : x
  2. Step 2: Convert to fraction form
    137,480.26/189,706.98 = 80,131.72/x
  3. Step 3: Cross multiply
    137,480.26x = 189,706.98 × 80,131.72
  4. Step 4: Simplify right side
    137,480.26x = 15,201,546,603.41
  5. Step 5: Solve for x
    x = 15,201,546,603.41/137,480.26
  6. Step 6: Final answer
    x = 110,572.58

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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.