Home / 126,694.81-189,663.60-76,623.45

Finding the Fourth Proportional to 126,694.81, 189,663.60 and 76,623.45

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Solution

The fourth proportional to 126,694.81, 189,663.60 and 76,623.45 is: 114,706.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,694.81 : 189,663.60 = 76,623.45 : x
  2. Step 2: Convert to fraction form
    126,694.81/189,663.60 = 76,623.45/x
  3. Step 3: Cross multiply
    126,694.81x = 189,663.60 × 76,623.45
  4. Step 4: Simplify right side
    126,694.81x = 14,532,679,371.42
  5. Step 5: Solve for x
    x = 14,532,679,371.42/126,694.81
  6. Step 6: Final answer
    x = 114,706.19

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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.