Home / 120,921.96-166,860.84-112,005.48

Finding the Fourth Proportional to 120,921.96, 166,860.84 and 112,005.48

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Solution

The fourth proportional to 120,921.96, 166,860.84 and 112,005.48 is: 154,556.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,921.96 : 166,860.84 = 112,005.48 : x
  2. Step 2: Convert to fraction form
    120,921.96/166,860.84 = 112,005.48/x
  3. Step 3: Cross multiply
    120,921.96x = 166,860.84 × 112,005.48
  4. Step 4: Simplify right side
    120,921.96x = 18,689,328,477.40
  5. Step 5: Solve for x
    x = 18,689,328,477.40/120,921.96
  6. Step 6: Final answer
    x = 154,556.94

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1.5x scale

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.