Home / 156,162.20-215,503.86-84,542.81

Finding the Fourth Proportional to 156,162.20, 215,503.86 and 84,542.81

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Solution

The fourth proportional to 156,162.20, 215,503.86 and 84,542.81 is: 116,669.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,162.20 : 215,503.86 = 84,542.81 : x
  2. Step 2: Convert to fraction form
    156,162.20/215,503.86 = 84,542.81/x
  3. Step 3: Cross multiply
    156,162.20x = 215,503.86 × 84,542.81
  4. Step 4: Simplify right side
    156,162.20x = 18,219,300,812.73
  5. Step 5: Solve for x
    x = 18,219,300,812.73/156,162.20
  6. Step 6: Final answer
    x = 116,669.09

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1.5x scale

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.