Home / 112,103.03-154,614.71-71,820.54

Finding the Fourth Proportional to 112,103.03, 154,614.71 and 71,820.54

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Solution

The fourth proportional to 112,103.03, 154,614.71 and 71,820.54 is: 99,056.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,103.03 : 154,614.71 = 71,820.54 : x
  2. Step 2: Convert to fraction form
    112,103.03/154,614.71 = 71,820.54/x
  3. Step 3: Cross multiply
    112,103.03x = 154,614.71 × 71,820.54
  4. Step 4: Simplify right side
    112,103.03x = 11,104,511,605.04
  5. Step 5: Solve for x
    x = 11,104,511,605.04/112,103.03
  6. Step 6: Final answer
    x = 99,056.30

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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.