Home / 126,145.65-189,004.36-76,120.64

Finding the Fourth Proportional to 126,145.65, 189,004.36 and 76,120.64

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Solution

The fourth proportional to 126,145.65, 189,004.36 and 76,120.64 is: 114,051.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,145.65 : 189,004.36 = 76,120.64 : x
  2. Step 2: Convert to fraction form
    126,145.65/189,004.36 = 76,120.64/x
  3. Step 3: Cross multiply
    126,145.65x = 189,004.36 × 76,120.64
  4. Step 4: Simplify right side
    126,145.65x = 14,387,132,845.99
  5. Step 5: Solve for x
    x = 14,387,132,845.99/126,145.65
  6. Step 6: Final answer
    x = 114,051.76

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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.