Home / 112,173.28-154,747.44-71,867.68

Finding the Fourth Proportional to 112,173.28, 154,747.44 and 71,867.68

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Solution

The fourth proportional to 112,173.28, 154,747.44 and 71,867.68 is: 99,144.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,173.28 : 154,747.44 = 71,867.68 : x
  2. Step 2: Convert to fraction form
    112,173.28/154,747.44 = 71,867.68/x
  3. Step 3: Cross multiply
    112,173.28x = 154,747.44 × 71,867.68
  4. Step 4: Simplify right side
    112,173.28x = 11,121,339,498.74
  5. Step 5: Solve for x
    x = 11,121,339,498.74/112,173.28
  6. Step 6: Final answer
    x = 99,144.28

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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.