Home / 121,103.52-167,145.98-80,195.54

Finding the Fourth Proportional to 121,103.52, 167,145.98 and 80,195.54

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Solution

The fourth proportional to 121,103.52, 167,145.98 and 80,195.54 is: 110,685.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,103.52 : 167,145.98 = 80,195.54 : x
  2. Step 2: Convert to fraction form
    121,103.52/167,145.98 = 80,195.54/x
  3. Step 3: Cross multiply
    121,103.52x = 167,145.98 × 80,195.54
  4. Step 4: Simplify right side
    121,103.52x = 13,404,360,888.22
  5. Step 5: Solve for x
    x = 13,404,360,888.22/121,103.52
  6. Step 6: Final answer
    x = 110,685.15

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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.