Home / 109,272.20-163,973.10-71,939.30

Finding the Fourth Proportional to 109,272.20, 163,973.10 and 71,939.30

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Solution

The fourth proportional to 109,272.20, 163,973.10 and 71,939.30 is: 107,951.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,272.20 : 163,973.10 = 71,939.30 : x
  2. Step 2: Convert to fraction form
    109,272.20/163,973.10 = 71,939.30/x
  3. Step 3: Cross multiply
    109,272.20x = 163,973.10 × 71,939.30
  4. Step 4: Simplify right side
    109,272.20x = 11,796,110,032.83
  5. Step 5: Solve for x
    x = 11,796,110,032.83/109,272.20
  6. Step 6: Final answer
    x = 107,951.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.