Home / 112,405.20-168,672.60-42,334.80

Finding the Fourth Proportional to 112,405.20, 168,672.60 and 42,334.80

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Solution

The fourth proportional to 112,405.20, 168,672.60 and 42,334.80 is: 63,526.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,405.20 : 168,672.60 = 42,334.80 : x
  2. Step 2: Convert to fraction form
    112,405.20/168,672.60 = 42,334.80/x
  3. Step 3: Cross multiply
    112,405.20x = 168,672.60 × 42,334.80
  4. Step 4: Simplify right side
    112,405.20x = 7,140,720,786.48
  5. Step 5: Solve for x
    x = 7,140,720,786.48/112,405.20
  6. Step 6: Final answer
    x = 63,526.61

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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.