Home / 156,766.80-235,190.72-68,000

Finding the Fourth Proportional to 156,766.80, 235,190.72 and 68,000

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Solution

The fourth proportional to 156,766.80, 235,190.72 and 68,000 is: 102,017.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,766.80 : 235,190.72 = 68,000 : x
  2. Step 2: Convert to fraction form
    156,766.80/235,190.72 = 68,000/x
  3. Step 3: Cross multiply
    156,766.80x = 235,190.72 × 68,000
  4. Step 4: Simplify right side
    156,766.80x = 15,992,968,960
  5. Step 5: Solve for x
    x = 15,992,968,960/156,766.80
  6. Step 6: Final answer
    x = 102,017.58

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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.