Home / 126,653.48-189,044.85-111,711.72

Finding the Fourth Proportional to 126,653.48, 189,044.85 and 111,711.72

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Solution

The fourth proportional to 126,653.48, 189,044.85 and 111,711.72 is: 166,742.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,653.48 : 189,044.85 = 111,711.72 : x
  2. Step 2: Convert to fraction form
    126,653.48/189,044.85 = 111,711.72/x
  3. Step 3: Cross multiply
    126,653.48x = 189,044.85 × 111,711.72
  4. Step 4: Simplify right side
    126,653.48x = 21,118,525,350.64
  5. Step 5: Solve for x
    x = 21,118,525,350.64/126,653.48
  6. Step 6: Final answer
    x = 166,742.56

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.