Home / 156,260.30-215,623.77-87,336.86

Finding the Fourth Proportional to 156,260.30, 215,623.77 and 87,336.86

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Solution

The fourth proportional to 156,260.30, 215,623.77 and 87,336.86 is: 120,516.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,260.30 : 215,623.77 = 87,336.86 : x
  2. Step 2: Convert to fraction form
    156,260.30/215,623.77 = 87,336.86/x
  3. Step 3: Cross multiply
    156,260.30x = 215,623.77 × 87,336.86
  4. Step 4: Simplify right side
    156,260.30x = 18,831,903,013.16
  5. Step 5: Solve for x
    x = 18,831,903,013.16/156,260.30
  6. Step 6: Final answer
    x = 120,516.23

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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.