Home / 199,831.56-275,580.10-128,234.12

Finding the Fourth Proportional to 199,831.56, 275,580.10 and 128,234.12

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Solution

The fourth proportional to 199,831.56, 275,580.10 and 128,234.12 is: 176,842.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,831.56 : 275,580.10 = 128,234.12 : x
  2. Step 2: Convert to fraction form
    199,831.56/275,580.10 = 128,234.12/x
  3. Step 3: Cross multiply
    199,831.56x = 275,580.10 × 128,234.12
  4. Step 4: Simplify right side
    199,831.56x = 35,338,771,613.01
  5. Step 5: Solve for x
    x = 35,338,771,613.01/199,831.56
  6. Step 6: Final answer
    x = 176,842.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.