Home / 129,905.20-194,857.80-122,688.10

Finding the Fourth Proportional to 129,905.20, 194,857.80 and 122,688.10

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Solution

The fourth proportional to 129,905.20, 194,857.80 and 122,688.10 is: 184,032.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,905.20 : 194,857.80 = 122,688.10 : x
  2. Step 2: Convert to fraction form
    129,905.20/194,857.80 = 122,688.10/x
  3. Step 3: Cross multiply
    129,905.20x = 194,857.80 × 122,688.10
  4. Step 4: Simplify right side
    129,905.20x = 23,906,733,252.18
  5. Step 5: Solve for x
    x = 23,906,733,252.18/129,905.20
  6. Step 6: Final answer
    x = 184,032.15

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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.