Home / 172,890.55-258,831.45-106,128.28

Finding the Fourth Proportional to 172,890.55, 258,831.45 and 106,128.28

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Solution

The fourth proportional to 172,890.55, 258,831.45 and 106,128.28 is: 158,882.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,890.55 : 258,831.45 = 106,128.28 : x
  2. Step 2: Convert to fraction form
    172,890.55/258,831.45 = 106,128.28/x
  3. Step 3: Cross multiply
    172,890.55x = 258,831.45 × 106,128.28
  4. Step 4: Simplify right side
    172,890.55x = 27,469,335,466.02
  5. Step 5: Solve for x
    x = 27,469,335,466.02/172,890.55
  6. Step 6: Final answer
    x = 158,882.80

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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.