Home / 104,178.15-156,516.30-66,811.43

Finding the Fourth Proportional to 104,178.15, 156,516.30 and 66,811.43

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Solution

The fourth proportional to 104,178.15, 156,516.30 and 66,811.43 is: 100,376.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,178.15 : 156,516.30 = 66,811.43 : x
  2. Step 2: Convert to fraction form
    104,178.15/156,516.30 = 66,811.43/x
  3. Step 3: Cross multiply
    104,178.15x = 156,516.30 × 66,811.43
  4. Step 4: Simplify right side
    104,178.15x = 10,457,078,212.60
  5. Step 5: Solve for x
    x = 10,457,078,212.60/104,178.15
  6. Step 6: Final answer
    x = 100,376.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.