Home / 206,143.50-284,478.66-120,153.36

Finding the Fourth Proportional to 206,143.50, 284,478.66 and 120,153.36

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Solution

The fourth proportional to 206,143.50, 284,478.66 and 120,153.36 is: 165,812.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,143.50 : 284,478.66 = 120,153.36 : x
  2. Step 2: Convert to fraction form
    206,143.50/284,478.66 = 120,153.36/x
  3. Step 3: Cross multiply
    206,143.50x = 284,478.66 × 120,153.36
  4. Step 4: Simplify right side
    206,143.50x = 34,181,066,847.30
  5. Step 5: Solve for x
    x = 34,181,066,847.30/206,143.50
  6. Step 6: Final answer
    x = 165,812.00

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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.