Home / 156,479.76-215,940.60-84,861.36

Finding the Fourth Proportional to 156,479.76, 215,940.60 and 84,861.36

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Solution

The fourth proportional to 156,479.76, 215,940.60 and 84,861.36 is: 117,107.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,479.76 : 215,940.60 = 84,861.36 : x
  2. Step 2: Convert to fraction form
    156,479.76/215,940.60 = 84,861.36/x
  3. Step 3: Cross multiply
    156,479.76x = 215,940.60 × 84,861.36
  4. Step 4: Simplify right side
    156,479.76x = 18,325,012,995.22
  5. Step 5: Solve for x
    x = 18,325,012,995.22/156,479.76
  6. Step 6: Final answer
    x = 117,107.88

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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.