Home / 199,631.36-299,299.41-120,728.04

Finding the Fourth Proportional to 199,631.36, 299,299.41 and 120,728.04

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Solution

The fourth proportional to 199,631.36, 299,299.41 and 120,728.04 is: 181,002.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,631.36 : 299,299.41 = 120,728.04 : x
  2. Step 2: Convert to fraction form
    199,631.36/299,299.41 = 120,728.04/x
  3. Step 3: Cross multiply
    199,631.36x = 299,299.41 × 120,728.04
  4. Step 4: Simplify right side
    199,631.36x = 36,133,831,142.46
  5. Step 5: Solve for x
    x = 36,133,831,142.46/199,631.36
  6. Step 6: Final answer
    x = 181,002.78

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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.