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Finding the Fourth Proportional to 162,968.80, 245,109.30 and 145,910.20

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Solution

The fourth proportional to 162,968.80, 245,109.30 and 145,910.20 is: 219,452.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,968.80 : 245,109.30 = 145,910.20 : x
  2. Step 2: Convert to fraction form
    162,968.80/245,109.30 = 145,910.20/x
  3. Step 3: Cross multiply
    162,968.80x = 245,109.30 × 145,910.20
  4. Step 4: Simplify right side
    162,968.80x = 35,763,946,984.86
  5. Step 5: Solve for x
    x = 35,763,946,984.86/162,968.80
  6. Step 6: Final answer
    x = 219,452.72

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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.