Home / 126,072.40-189,108.60-112,939.60

Finding the Fourth Proportional to 126,072.40, 189,108.60 and 112,939.60

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Solution

The fourth proportional to 126,072.40, 189,108.60 and 112,939.60 is: 169,409.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,072.40 : 189,108.60 = 112,939.60 : x
  2. Step 2: Convert to fraction form
    126,072.40/189,108.60 = 112,939.60/x
  3. Step 3: Cross multiply
    126,072.40x = 189,108.60 × 112,939.60
  4. Step 4: Simplify right side
    126,072.40x = 21,357,849,640.56
  5. Step 5: Solve for x
    x = 21,357,849,640.56/126,072.40
  6. Step 6: Final answer
    x = 169,409.40

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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.