Home / 156,338.34-215,746-84,718.36

Finding the Fourth Proportional to 156,338.34, 215,746 and 84,718.36

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Solution

The fourth proportional to 156,338.34, 215,746 and 84,718.36 is: 116,910.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,338.34 : 215,746 = 84,718.36 : x
  2. Step 2: Convert to fraction form
    156,338.34/215,746 = 84,718.36/x
  3. Step 3: Cross multiply
    156,338.34x = 215,746 × 84,718.36
  4. Step 4: Simplify right side
    156,338.34x = 18,277,647,296.56
  5. Step 5: Solve for x
    x = 18,277,647,296.56/156,338.34
  6. Step 6: Final answer
    x = 116,910.84

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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.