Home / 121,627.88-182,476.38-85,754.60

Finding the Fourth Proportional to 121,627.88, 182,476.38 and 85,754.60

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Solution

The fourth proportional to 121,627.88, 182,476.38 and 85,754.60 is: 128,656.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,627.88 : 182,476.38 = 85,754.60 : x
  2. Step 2: Convert to fraction form
    121,627.88/182,476.38 = 85,754.60/x
  3. Step 3: Cross multiply
    121,627.88x = 182,476.38 × 85,754.60
  4. Step 4: Simplify right side
    121,627.88x = 15,648,188,976.35
  5. Step 5: Solve for x
    x = 15,648,188,976.35/121,627.88
  6. Step 6: Final answer
    x = 128,656.27

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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.