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Finding the Fourth Proportional to 207,087.54, 285,640.31 and 134,360.49

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Solution

The fourth proportional to 207,087.54, 285,640.31 and 134,360.49 is: 185,326.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,087.54 : 285,640.31 = 134,360.49 : x
  2. Step 2: Convert to fraction form
    207,087.54/285,640.31 = 134,360.49/x
  3. Step 3: Cross multiply
    207,087.54x = 285,640.31 × 134,360.49
  4. Step 4: Simplify right side
    207,087.54x = 38,378,771,343.55
  5. Step 5: Solve for x
    x = 38,378,771,343.55/207,087.54
  6. Step 6: Final answer
    x = 185,326.32

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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.