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Finding the Fourth Proportional to 117,180.80, 161,709.90 and 63,465.68

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Solution

The fourth proportional to 117,180.80, 161,709.90 and 63,465.68 is: 87,582.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,180.80 : 161,709.90 = 63,465.68 : x
  2. Step 2: Convert to fraction form
    117,180.80/161,709.90 = 63,465.68/x
  3. Step 3: Cross multiply
    117,180.80x = 161,709.90 × 63,465.68
  4. Step 4: Simplify right side
    117,180.80x = 10,263,028,766.23
  5. Step 5: Solve for x
    x = 10,263,028,766.23/117,180.80
  6. Step 6: Final answer
    x = 87,582.85

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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.