Home / 128,976.04-193,398.19-75,771.95

Finding the Fourth Proportional to 128,976.04, 193,398.19 and 75,771.95

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Solution

The fourth proportional to 128,976.04, 193,398.19 and 75,771.95 is: 113,619.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,976.04 : 193,398.19 = 75,771.95 : x
  2. Step 2: Convert to fraction form
    128,976.04/193,398.19 = 75,771.95/x
  3. Step 3: Cross multiply
    128,976.04x = 193,398.19 × 75,771.95
  4. Step 4: Simplify right side
    128,976.04x = 14,654,157,583.39
  5. Step 5: Solve for x
    x = 14,654,157,583.39/128,976.04
  6. Step 6: Final answer
    x = 113,619.23

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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.