Home / 137,938.88-190,377.84-128,934

Finding the Fourth Proportional to 137,938.88, 190,377.84 and 128,934

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Solution

The fourth proportional to 137,938.88, 190,377.84 and 128,934 is: 177,949.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,938.88 : 190,377.84 = 128,934 : x
  2. Step 2: Convert to fraction form
    137,938.88/190,377.84 = 128,934/x
  3. Step 3: Cross multiply
    137,938.88x = 190,377.84 × 128,934
  4. Step 4: Simplify right side
    137,938.88x = 24,546,176,422.56
  5. Step 5: Solve for x
    x = 24,546,176,422.56/137,938.88
  6. Step 6: Final answer
    x = 177,949.66

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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.