Home / 205,904.70-284,127.75-115,254.78

Finding the Fourth Proportional to 205,904.70, 284,127.75 and 115,254.78

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Solution

The fourth proportional to 205,904.70, 284,127.75 and 115,254.78 is: 159,039.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,904.70 : 284,127.75 = 115,254.78 : x
  2. Step 2: Convert to fraction form
    205,904.70/284,127.75 = 115,254.78/x
  3. Step 3: Cross multiply
    205,904.70x = 284,127.75 × 115,254.78
  4. Step 4: Simplify right side
    205,904.70x = 32,747,081,318.15
  5. Step 5: Solve for x
    x = 32,747,081,318.15/205,904.70
  6. Step 6: Final answer
    x = 159,039.99

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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.