Home / 156,917.86-216,550.86-85,302.70

Finding the Fourth Proportional to 156,917.86, 216,550.86 and 85,302.70

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Solution

The fourth proportional to 156,917.86, 216,550.86 and 85,302.70 is: 117,720.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,917.86 : 216,550.86 = 85,302.70 : x
  2. Step 2: Convert to fraction form
    156,917.86/216,550.86 = 85,302.70/x
  3. Step 3: Cross multiply
    156,917.86x = 216,550.86 × 85,302.70
  4. Step 4: Simplify right side
    156,917.86x = 18,472,373,045.32
  5. Step 5: Solve for x
    x = 18,472,373,045.32/156,917.86
  6. Step 6: Final answer
    x = 117,720.02

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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.