Home / 112,489.20-168,539.40-53,197.20

Finding the Fourth Proportional to 112,489.20, 168,539.40 and 53,197.20

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Solution

The fourth proportional to 112,489.20, 168,539.40 and 53,197.20 is: 79,703.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,489.20 : 168,539.40 = 53,197.20 : x
  2. Step 2: Convert to fraction form
    112,489.20/168,539.40 = 53,197.20/x
  3. Step 3: Cross multiply
    112,489.20x = 168,539.40 × 53,197.20
  4. Step 4: Simplify right side
    112,489.20x = 8,965,824,169.68
  5. Step 5: Solve for x
    x = 8,965,824,169.68/112,489.20
  6. Step 6: Final answer
    x = 79,703.87

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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.