Home / 138,244.37-190,725.08-80,865.41

Finding the Fourth Proportional to 138,244.37, 190,725.08 and 80,865.41

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Solution

The fourth proportional to 138,244.37, 190,725.08 and 80,865.41 is: 111,563.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,244.37 : 190,725.08 = 80,865.41 : x
  2. Step 2: Convert to fraction form
    138,244.37/190,725.08 = 80,865.41/x
  3. Step 3: Cross multiply
    138,244.37x = 190,725.08 × 80,865.41
  4. Step 4: Simplify right side
    138,244.37x = 15,423,060,433.53
  5. Step 5: Solve for x
    x = 15,423,060,433.53/138,244.37
  6. Step 6: Final answer
    x = 111,563.75

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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.