Home / 126,054.20-189,081.30-66,859.40

Finding the Fourth Proportional to 126,054.20, 189,081.30 and 66,859.40

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Solution

The fourth proportional to 126,054.20, 189,081.30 and 66,859.40 is: 100,289.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,054.20 : 189,081.30 = 66,859.40 : x
  2. Step 2: Convert to fraction form
    126,054.20/189,081.30 = 66,859.40/x
  3. Step 3: Cross multiply
    126,054.20x = 189,081.30 × 66,859.40
  4. Step 4: Simplify right side
    126,054.20x = 12,641,862,269.22
  5. Step 5: Solve for x
    x = 12,641,862,269.22/126,054.20
  6. Step 6: Final answer
    x = 100,289.10

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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.