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Finding the Fourth Proportional to 168,281.20, 252,114.60 and 102,540.40

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Solution

The fourth proportional to 168,281.20, 252,114.60 and 102,540.40 is: 153,623.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,281.20 : 252,114.60 = 102,540.40 : x
  2. Step 2: Convert to fraction form
    168,281.20/252,114.60 = 102,540.40/x
  3. Step 3: Cross multiply
    168,281.20x = 252,114.60 × 102,540.40
  4. Step 4: Simplify right side
    168,281.20x = 25,851,931,929.84
  5. Step 5: Solve for x
    x = 25,851,931,929.84/168,281.20
  6. Step 6: Final answer
    x = 153,623.41

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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.