Home / 126,113.91-189,226.59-66,128.07

Finding the Fourth Proportional to 126,113.91, 189,226.59 and 66,128.07

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Solution

The fourth proportional to 126,113.91, 189,226.59 and 66,128.07 is: 99,221.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,113.91 : 189,226.59 = 66,128.07 : x
  2. Step 2: Convert to fraction form
    126,113.91/189,226.59 = 66,128.07/x
  3. Step 3: Cross multiply
    126,113.91x = 189,226.59 × 66,128.07
  4. Step 4: Simplify right side
    126,113.91x = 12,513,189,189.38
  5. Step 5: Solve for x
    x = 12,513,189,189.38/126,113.91
  6. Step 6: Final answer
    x = 99,221.32

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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.