Home / 126,721.89-189,914.69-105,703.11

Finding the Fourth Proportional to 126,721.89, 189,914.69 and 105,703.11

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Solution

The fourth proportional to 126,721.89, 189,914.69 and 105,703.11 is: 158,414.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,721.89 : 189,914.69 = 105,703.11 : x
  2. Step 2: Convert to fraction form
    126,721.89/189,914.69 = 105,703.11/x
  3. Step 3: Cross multiply
    126,721.89x = 189,914.69 × 105,703.11
  4. Step 4: Simplify right side
    126,721.89x = 20,074,573,631.94
  5. Step 5: Solve for x
    x = 20,074,573,631.94/126,721.89
  6. Step 6: Final answer
    x = 158,414.41

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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.