Home / 128,441.42-177,249.66-71,852.84

Finding the Fourth Proportional to 128,441.42, 177,249.66 and 71,852.84

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Solution

The fourth proportional to 128,441.42, 177,249.66 and 71,852.84 is: 99,157.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,441.42 : 177,249.66 = 71,852.84 : x
  2. Step 2: Convert to fraction form
    128,441.42/177,249.66 = 71,852.84/x
  3. Step 3: Cross multiply
    128,441.42x = 177,249.66 × 71,852.84
  4. Step 4: Simplify right side
    128,441.42x = 12,735,891,460.03
  5. Step 5: Solve for x
    x = 12,735,891,460.03/128,441.42
  6. Step 6: Final answer
    x = 99,157.20

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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.