Home / 117,188.11-161,709.85-68,784.81

Finding the Fourth Proportional to 117,188.11, 161,709.85 and 68,784.81

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Solution

The fourth proportional to 117,188.11, 161,709.85 and 68,784.81 is: 94,917.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,188.11 : 161,709.85 = 68,784.81 : x
  2. Step 2: Convert to fraction form
    117,188.11/161,709.85 = 68,784.81/x
  3. Step 3: Cross multiply
    117,188.11x = 161,709.85 × 68,784.81
  4. Step 4: Simplify right side
    117,188.11x = 11,123,181,307.38
  5. Step 5: Solve for x
    x = 11,123,181,307.38/117,188.11
  6. Step 6: Final answer
    x = 94,917.32

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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.