Home / 156,989.45-235,538.85-68,306.60

Finding the Fourth Proportional to 156,989.45, 235,538.85 and 68,306.60

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Solution

The fourth proportional to 156,989.45, 235,538.85 and 68,306.60 is: 102,483.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,989.45 : 235,538.85 = 68,306.60 : x
  2. Step 2: Convert to fraction form
    156,989.45/235,538.85 = 68,306.60/x
  3. Step 3: Cross multiply
    156,989.45x = 235,538.85 × 68,306.60
  4. Step 4: Simplify right side
    156,989.45x = 16,088,858,011.41
  5. Step 5: Solve for x
    x = 16,088,858,011.41/156,989.45
  6. Step 6: Final answer
    x = 102,483.69

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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.