Home / 128,972.37-193,449.39-34,200.45

Finding the Fourth Proportional to 128,972.37, 193,449.39 and 34,200.45

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Solution

The fourth proportional to 128,972.37, 193,449.39 and 34,200.45 is: 51,298.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,972.37 : 193,449.39 = 34,200.45 : x
  2. Step 2: Convert to fraction form
    128,972.37/193,449.39 = 34,200.45/x
  3. Step 3: Cross multiply
    128,972.37x = 193,449.39 × 34,200.45
  4. Step 4: Simplify right side
    128,972.37x = 6,616,056,190.23
  5. Step 5: Solve for x
    x = 6,616,056,190.23/128,972.37
  6. Step 6: Final answer
    x = 51,298.24

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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.