Home / 117,905.72-162,708.92-64,190.63

Finding the Fourth Proportional to 117,905.72, 162,708.92 and 64,190.63

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Solution

The fourth proportional to 117,905.72, 162,708.92 and 64,190.63 is: 88,582.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,905.72 : 162,708.92 = 64,190.63 : x
  2. Step 2: Convert to fraction form
    117,905.72/162,708.92 = 64,190.63/x
  3. Step 3: Cross multiply
    117,905.72x = 162,708.92 × 64,190.63
  4. Step 4: Simplify right side
    117,905.72x = 10,444,388,081.42
  5. Step 5: Solve for x
    x = 10,444,388,081.42/117,905.72
  6. Step 6: Final answer
    x = 88,582.54

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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.