Home / 126,005.40-189,008.10-115,945.20

Finding the Fourth Proportional to 126,005.40, 189,008.10 and 115,945.20

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Solution

The fourth proportional to 126,005.40, 189,008.10 and 115,945.20 is: 173,917.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,005.40 : 189,008.10 = 115,945.20 : x
  2. Step 2: Convert to fraction form
    126,005.40/189,008.10 = 115,945.20/x
  3. Step 3: Cross multiply
    126,005.40x = 189,008.10 × 115,945.20
  4. Step 4: Simplify right side
    126,005.40x = 21,914,581,956.12
  5. Step 5: Solve for x
    x = 21,914,581,956.12/126,005.40
  6. Step 6: Final answer
    x = 173,917.80

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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.