Home / 142,648.20-213,820.56-53,863.92

Finding the Fourth Proportional to 142,648.20, 213,820.56 and 53,863.92

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Solution

The fourth proportional to 142,648.20, 213,820.56 and 53,863.92 is: 80,738.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,648.20 : 213,820.56 = 53,863.92 : x
  2. Step 2: Convert to fraction form
    142,648.20/213,820.56 = 53,863.92/x
  3. Step 3: Cross multiply
    142,648.20x = 213,820.56 × 53,863.92
  4. Step 4: Simplify right side
    142,648.20x = 11,517,213,538.20
  5. Step 5: Solve for x
    x = 11,517,213,538.20/142,648.20
  6. Step 6: Final answer
    x = 80,738.58

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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.