Home / 126,509.28-174,713.54-109,431.54

Finding the Fourth Proportional to 126,509.28, 174,713.54 and 109,431.54

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Solution

The fourth proportional to 126,509.28, 174,713.54 and 109,431.54 is: 151,128.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,509.28 : 174,713.54 = 109,431.54 : x
  2. Step 2: Convert to fraction form
    126,509.28/174,713.54 = 109,431.54/x
  3. Step 3: Cross multiply
    126,509.28x = 174,713.54 × 109,431.54
  4. Step 4: Simplify right side
    126,509.28x = 19,119,171,193.89
  5. Step 5: Solve for x
    x = 19,119,171,193.89/126,509.28
  6. Step 6: Final answer
    x = 151,128.61

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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.