Home / 121,928-182,731.62-51,720.44

Finding the Fourth Proportional to 121,928, 182,731.62 and 51,720.44

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Solution

The fourth proportional to 121,928, 182,731.62 and 51,720.44 is: 77,512.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,928 : 182,731.62 = 51,720.44 : x
  2. Step 2: Convert to fraction form
    121,928/182,731.62 = 51,720.44/x
  3. Step 3: Cross multiply
    121,928x = 182,731.62 × 51,720.44
  4. Step 4: Simplify right side
    121,928x = 9,450,959,788.31
  5. Step 5: Solve for x
    x = 9,450,959,788.31/121,928
  6. Step 6: Final answer
    x = 77,512.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.