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Finding the Fourth Proportional to 117,698.86, 162,497.10 and 80,967.79

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Solution

The fourth proportional to 117,698.86, 162,497.10 and 80,967.79 is: 111,785.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,698.86 : 162,497.10 = 80,967.79 : x
  2. Step 2: Convert to fraction form
    117,698.86/162,497.10 = 80,967.79/x
  3. Step 3: Cross multiply
    117,698.86x = 162,497.10 × 80,967.79
  4. Step 4: Simplify right side
    117,698.86x = 13,157,031,068.41
  5. Step 5: Solve for x
    x = 13,157,031,068.41/117,698.86
  6. Step 6: Final answer
    x = 111,785.54

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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.