Home / 117,187.11-161,708.47-68,783.81

Finding the Fourth Proportional to 117,187.11, 161,708.47 and 68,783.81

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Solution

The fourth proportional to 117,187.11, 161,708.47 and 68,783.81 is: 94,915.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,187.11 : 161,708.47 = 68,783.81 : x
  2. Step 2: Convert to fraction form
    117,187.11/161,708.47 = 68,783.81/x
  3. Step 3: Cross multiply
    117,187.11x = 161,708.47 × 68,783.81
  4. Step 4: Simplify right side
    117,187.11x = 11,122,923,695.37
  5. Step 5: Solve for x
    x = 11,122,923,695.37/117,187.11
  6. Step 6: Final answer
    x = 94,915.93

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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.