Home / 112,375.20-168,562.80-103,821.60

Finding the Fourth Proportional to 112,375.20, 168,562.80 and 103,821.60

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Solution

The fourth proportional to 112,375.20, 168,562.80 and 103,821.60 is: 155,732.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,375.20 : 168,562.80 = 103,821.60 : x
  2. Step 2: Convert to fraction form
    112,375.20/168,562.80 = 103,821.60/x
  3. Step 3: Cross multiply
    112,375.20x = 168,562.80 × 103,821.60
  4. Step 4: Simplify right side
    112,375.20x = 17,500,459,596.48
  5. Step 5: Solve for x
    x = 17,500,459,596.48/112,375.20
  6. Step 6: Final answer
    x = 155,732.40

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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.