Home / 206,098.49-284,334.05-128,528.51

Finding the Fourth Proportional to 206,098.49, 284,334.05 and 128,528.51

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Solution

The fourth proportional to 206,098.49, 284,334.05 and 128,528.51 is: 177,318.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,098.49 : 284,334.05 = 128,528.51 : x
  2. Step 2: Convert to fraction form
    206,098.49/284,334.05 = 128,528.51/x
  3. Step 3: Cross multiply
    206,098.49x = 284,334.05 × 128,528.51
  4. Step 4: Simplify right side
    206,098.49x = 36,545,031,978.32
  5. Step 5: Solve for x
    x = 36,545,031,978.32/206,098.49
  6. Step 6: Final answer
    x = 177,318.29

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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.