Home / 112,462.72-168,729.84-70,369.60

Finding the Fourth Proportional to 112,462.72, 168,729.84 and 70,369.60

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Solution

The fourth proportional to 112,462.72, 168,729.84 and 70,369.60 is: 105,576.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,462.72 : 168,729.84 = 70,369.60 : x
  2. Step 2: Convert to fraction form
    112,462.72/168,729.84 = 70,369.60/x
  3. Step 3: Cross multiply
    112,462.72x = 168,729.84 × 70,369.60
  4. Step 4: Simplify right side
    112,462.72x = 11,873,451,348.86
  5. Step 5: Solve for x
    x = 11,873,451,348.86/112,462.72
  6. Step 6: Final answer
    x = 105,576.78

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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.