Home / 102,882.53-141,972.10-56,939.67

Finding the Fourth Proportional to 102,882.53, 141,972.10 and 56,939.67

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Solution

The fourth proportional to 102,882.53, 141,972.10 and 56,939.67 is: 78,573.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,882.53 : 141,972.10 = 56,939.67 : x
  2. Step 2: Convert to fraction form
    102,882.53/141,972.10 = 56,939.67/x
  3. Step 3: Cross multiply
    102,882.53x = 141,972.10 × 56,939.67
  4. Step 4: Simplify right side
    102,882.53x = 8,083,844,380.86
  5. Step 5: Solve for x
    x = 8,083,844,380.86/102,882.53
  6. Step 6: Final answer
    x = 78,573.54

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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.