Home / 120,664.22-166,521.09-72,908.33

Finding the Fourth Proportional to 120,664.22, 166,521.09 and 72,908.33

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Solution

The fourth proportional to 120,664.22, 166,521.09 and 72,908.33 is: 100,616.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,664.22 : 166,521.09 = 72,908.33 : x
  2. Step 2: Convert to fraction form
    120,664.22/166,521.09 = 72,908.33/x
  3. Step 3: Cross multiply
    120,664.22x = 166,521.09 × 72,908.33
  4. Step 4: Simplify right side
    120,664.22x = 12,140,774,581.68
  5. Step 5: Solve for x
    x = 12,140,774,581.68/120,664.22
  6. Step 6: Final answer
    x = 100,616.19

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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.