Home / 132,568.41-182,912.51-78,122.81

Finding the Fourth Proportional to 132,568.41, 182,912.51 and 78,122.81

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Solution

The fourth proportional to 132,568.41, 182,912.51 and 78,122.81 is: 107,790.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,568.41 : 182,912.51 = 78,122.81 : x
  2. Step 2: Convert to fraction form
    132,568.41/182,912.51 = 78,122.81/x
  3. Step 3: Cross multiply
    132,568.41x = 182,912.51 × 78,122.81
  4. Step 4: Simplify right side
    132,568.41x = 14,289,637,960.18
  5. Step 5: Solve for x
    x = 14,289,637,960.18/132,568.41
  6. Step 6: Final answer
    x = 107,790.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.