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Finding the Fourth Proportional to 103,851.61, 156,102.62 and 68,539.88

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Solution

The fourth proportional to 103,851.61, 156,102.62 and 68,539.88 is: 103,024.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,851.61 : 156,102.62 = 68,539.88 : x
  2. Step 2: Convert to fraction form
    103,851.61/156,102.62 = 68,539.88/x
  3. Step 3: Cross multiply
    103,851.61x = 156,102.62 × 68,539.88
  4. Step 4: Simplify right side
    103,851.61x = 10,699,254,397.50
  5. Step 5: Solve for x
    x = 10,699,254,397.50/103,851.61
  6. Step 6: Final answer
    x = 103,024.44

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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.