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Finding the Fourth Proportional to 235,625.96, 325,165.25 and 128,196.78

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Solution

The fourth proportional to 235,625.96, 325,165.25 and 128,196.78 is: 176,912.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,625.96 : 325,165.25 = 128,196.78 : x
  2. Step 2: Convert to fraction form
    235,625.96/325,165.25 = 128,196.78/x
  3. Step 3: Cross multiply
    235,625.96x = 325,165.25 × 128,196.78
  4. Step 4: Simplify right side
    235,625.96x = 41,685,137,119.02
  5. Step 5: Solve for x
    x = 41,685,137,119.02/235,625.96
  6. Step 6: Final answer
    x = 176,912.33

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1.5x scale

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.