Home / 156,939.20-235,334.60-57,029.76

Finding the Fourth Proportional to 156,939.20, 235,334.60 and 57,029.76

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Solution

The fourth proportional to 156,939.20, 235,334.60 and 57,029.76 is: 85,517.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,939.20 : 235,334.60 = 57,029.76 : x
  2. Step 2: Convert to fraction form
    156,939.20/235,334.60 = 57,029.76/x
  3. Step 3: Cross multiply
    156,939.20x = 235,334.60 × 57,029.76
  4. Step 4: Simplify right side
    156,939.20x = 13,421,075,757.70
  5. Step 5: Solve for x
    x = 13,421,075,757.70/156,939.20
  6. Step 6: Final answer
    x = 85,517.68

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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.