Home / 156,905.66-216,529.83-85,285.65

Finding the Fourth Proportional to 156,905.66, 216,529.83 and 85,285.65

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Solution

The fourth proportional to 156,905.66, 216,529.83 and 85,285.65 is: 117,694.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,905.66 : 216,529.83 = 85,285.65 : x
  2. Step 2: Convert to fraction form
    156,905.66/216,529.83 = 85,285.65/x
  3. Step 3: Cross multiply
    156,905.66x = 216,529.83 × 85,285.65
  4. Step 4: Simplify right side
    156,905.66x = 18,466,887,295.94
  5. Step 5: Solve for x
    x = 18,466,887,295.94/156,905.66
  6. Step 6: Final answer
    x = 117,694.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.