Home / 156,939.10-235,408.65-57,211.90

Finding the Fourth Proportional to 156,939.10, 235,408.65 and 57,211.90

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Solution

The fourth proportional to 156,939.10, 235,408.65 and 57,211.90 is: 85,817.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,939.10 : 235,408.65 = 57,211.90 : x
  2. Step 2: Convert to fraction form
    156,939.10/235,408.65 = 57,211.90/x
  3. Step 3: Cross multiply
    156,939.10x = 235,408.65 × 57,211.90
  4. Step 4: Simplify right side
    156,939.10x = 13,468,176,142.94
  5. Step 5: Solve for x
    x = 13,468,176,142.94/156,939.10
  6. Step 6: Final answer
    x = 85,817.85

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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.