Home / 117,106.35-161,606.78-63,391.80

Finding the Fourth Proportional to 117,106.35, 161,606.78 and 63,391.80

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Solution

The fourth proportional to 117,106.35, 161,606.78 and 63,391.80 is: 87,480.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,106.35 : 161,606.78 = 63,391.80 : x
  2. Step 2: Convert to fraction form
    117,106.35/161,606.78 = 63,391.80/x
  3. Step 3: Cross multiply
    117,106.35x = 161,606.78 × 63,391.80
  4. Step 4: Simplify right side
    117,106.35x = 10,244,544,676.40
  5. Step 5: Solve for x
    x = 10,244,544,676.40/117,106.35
  6. Step 6: Final answer
    x = 87,480.69

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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.