Home / 102,915.20-154,372.80-100,841.60

Finding the Fourth Proportional to 102,915.20, 154,372.80 and 100,841.60

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Solution

The fourth proportional to 102,915.20, 154,372.80 and 100,841.60 is: 151,262.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,915.20 : 154,372.80 = 100,841.60 : x
  2. Step 2: Convert to fraction form
    102,915.20/154,372.80 = 100,841.60/x
  3. Step 3: Cross multiply
    102,915.20x = 154,372.80 × 100,841.60
  4. Step 4: Simplify right side
    102,915.20x = 15,567,200,148.48
  5. Step 5: Solve for x
    x = 15,567,200,148.48/102,915.20
  6. Step 6: Final answer
    x = 151,262.40

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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.