Home / 128,928.27-193,388.36-35,433.21

Finding the Fourth Proportional to 128,928.27, 193,388.36 and 35,433.21

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Solution

The fourth proportional to 128,928.27, 193,388.36 and 35,433.21 is: 53,148.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,928.27 : 193,388.36 = 35,433.21 : x
  2. Step 2: Convert to fraction form
    128,928.27/193,388.36 = 35,433.21/x
  3. Step 3: Cross multiply
    128,928.27x = 193,388.36 × 35,433.21
  4. Step 4: Simplify right side
    128,928.27x = 6,852,370,194.27
  5. Step 5: Solve for x
    x = 6,852,370,194.27/128,928.27
  6. Step 6: Final answer
    x = 53,148.70

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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.