Home / 126,158.72-189,023.85-76,133.69

Finding the Fourth Proportional to 126,158.72, 189,023.85 and 76,133.69

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Solution

The fourth proportional to 126,158.72, 189,023.85 and 76,133.69 is: 114,071.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,158.72 : 189,023.85 = 76,133.69 : x
  2. Step 2: Convert to fraction form
    126,158.72/189,023.85 = 76,133.69/x
  3. Step 3: Cross multiply
    126,158.72x = 189,023.85 × 76,133.69
  4. Step 4: Simplify right side
    126,158.72x = 14,391,083,198.51
  5. Step 5: Solve for x
    x = 14,391,083,198.51/126,158.72
  6. Step 6: Final answer
    x = 114,071.25

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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.