Home / 128,927.88-193,258.78-54,091.48

Finding the Fourth Proportional to 128,927.88, 193,258.78 and 54,091.48

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Solution

The fourth proportional to 128,927.88, 193,258.78 and 54,091.48 is: 81,081.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,927.88 : 193,258.78 = 54,091.48 : x
  2. Step 2: Convert to fraction form
    128,927.88/193,258.78 = 54,091.48/x
  3. Step 3: Cross multiply
    128,927.88x = 193,258.78 × 54,091.48
  4. Step 4: Simplify right side
    128,927.88x = 10,453,653,433.19
  5. Step 5: Solve for x
    x = 10,453,653,433.19/128,927.88
  6. Step 6: Final answer
    x = 81,081.40

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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.