Home / 126,415.40-189,623.10-113,730.80

Finding the Fourth Proportional to 126,415.40, 189,623.10 and 113,730.80

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Solution

The fourth proportional to 126,415.40, 189,623.10 and 113,730.80 is: 170,596.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,415.40 : 189,623.10 = 113,730.80 : x
  2. Step 2: Convert to fraction form
    126,415.40/189,623.10 = 113,730.80/x
  3. Step 3: Cross multiply
    126,415.40x = 189,623.10 × 113,730.80
  4. Step 4: Simplify right side
    126,415.40x = 21,565,986,861.48
  5. Step 5: Solve for x
    x = 21,565,986,861.48/126,415.40
  6. Step 6: Final answer
    x = 170,596.20

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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.