Home / 142,385.28-213,661.44-75,874.56

Finding the Fourth Proportional to 142,385.28, 213,661.44 and 75,874.56

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Solution

The fourth proportional to 142,385.28, 213,661.44 and 75,874.56 is: 113,856.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,385.28 : 213,661.44 = 75,874.56 : x
  2. Step 2: Convert to fraction form
    142,385.28/213,661.44 = 75,874.56/x
  3. Step 3: Cross multiply
    142,385.28x = 213,661.44 × 75,874.56
  4. Step 4: Simplify right side
    142,385.28x = 16,211,467,748.97
  5. Step 5: Solve for x
    x = 16,211,467,748.97/142,385.28
  6. Step 6: Final answer
    x = 113,856.35

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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.