Home / 128,933.40-193,400.10-126,965.10

Finding the Fourth Proportional to 128,933.40, 193,400.10 and 126,965.10

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Solution

The fourth proportional to 128,933.40, 193,400.10 and 126,965.10 is: 190,447.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,933.40 : 193,400.10 = 126,965.10 : x
  2. Step 2: Convert to fraction form
    128,933.40/193,400.10 = 126,965.10/x
  3. Step 3: Cross multiply
    128,933.40x = 193,400.10 × 126,965.10
  4. Step 4: Simplify right side
    128,933.40x = 24,555,063,036.51
  5. Step 5: Solve for x
    x = 24,555,063,036.51/128,933.40
  6. Step 6: Final answer
    x = 190,447.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.