Home / 112,161.38-154,799.49-71,920.58

Finding the Fourth Proportional to 112,161.38, 154,799.49 and 71,920.58

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Solution

The fourth proportional to 112,161.38, 154,799.49 and 71,920.58 is: 99,261.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,161.38 : 154,799.49 = 71,920.58 : x
  2. Step 2: Convert to fraction form
    112,161.38/154,799.49 = 71,920.58/x
  3. Step 3: Cross multiply
    112,161.38x = 154,799.49 × 71,920.58
  4. Step 4: Simplify right side
    112,161.38x = 11,133,269,104.50
  5. Step 5: Solve for x
    x = 11,133,269,104.50/112,161.38
  6. Step 6: Final answer
    x = 99,261.16

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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.