Home / 128,964.39-193,553.19-65,831.16

Finding the Fourth Proportional to 128,964.39, 193,553.19 and 65,831.16

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Solution

The fourth proportional to 128,964.39, 193,553.19 and 65,831.16 is: 98,801.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,964.39 : 193,553.19 = 65,831.16 : x
  2. Step 2: Convert to fraction form
    128,964.39/193,553.19 = 65,831.16/x
  3. Step 3: Cross multiply
    128,964.39x = 193,553.19 × 65,831.16
  4. Step 4: Simplify right side
    128,964.39x = 12,741,831,019.40
  5. Step 5: Solve for x
    x = 12,741,831,019.40/128,964.39
  6. Step 6: Final answer
    x = 98,801.16

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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.