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Finding the Fourth Proportional to 156,777.80, 235,188.30 and 68,028.80

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Solution

The fourth proportional to 156,777.80, 235,188.30 and 68,028.80 is: 102,052.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,777.80 : 235,188.30 = 68,028.80 : x
  2. Step 2: Convert to fraction form
    156,777.80/235,188.30 = 68,028.80/x
  3. Step 3: Cross multiply
    156,777.80x = 235,188.30 × 68,028.80
  4. Step 4: Simplify right side
    156,777.80x = 15,999,577,823.04
  5. Step 5: Solve for x
    x = 15,999,577,823.04/156,777.80
  6. Step 6: Final answer
    x = 102,052.57

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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.