Home / 126,003.54-189,005.63-86,440.71

Finding the Fourth Proportional to 126,003.54, 189,005.63 and 86,440.71

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Solution

The fourth proportional to 126,003.54, 189,005.63 and 86,440.71 is: 129,661.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,003.54 : 189,005.63 = 86,440.71 : x
  2. Step 2: Convert to fraction form
    126,003.54/189,005.63 = 86,440.71/x
  3. Step 3: Cross multiply
    126,003.54x = 189,005.63 × 86,440.71
  4. Step 4: Simplify right side
    126,003.54x = 16,337,780,418.99
  5. Step 5: Solve for x
    x = 16,337,780,418.99/126,003.54
  6. Step 6: Final answer
    x = 129,661.28

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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.