Home / 209,540.84-289,035.78-127,831.76

Finding the Fourth Proportional to 209,540.84, 289,035.78 and 127,831.76

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Solution

The fourth proportional to 209,540.84, 289,035.78 and 127,831.76 is: 176,328.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,540.84 : 289,035.78 = 127,831.76 : x
  2. Step 2: Convert to fraction form
    209,540.84/289,035.78 = 127,831.76/x
  3. Step 3: Cross multiply
    209,540.84x = 289,035.78 × 127,831.76
  4. Step 4: Simplify right side
    209,540.84x = 36,947,952,460.37
  5. Step 5: Solve for x
    x = 36,947,952,460.37/209,540.84
  6. Step 6: Final answer
    x = 176,328.17

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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.