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Finding the Fourth Proportional to 207,192.65, 285,921.64 and 121,202.54

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Solution

The fourth proportional to 207,192.65, 285,921.64 and 121,202.54 is: 167,257.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,192.65 : 285,921.64 = 121,202.54 : x
  2. Step 2: Convert to fraction form
    207,192.65/285,921.64 = 121,202.54/x
  3. Step 3: Cross multiply
    207,192.65x = 285,921.64 × 121,202.54
  4. Step 4: Simplify right side
    207,192.65x = 34,654,429,729.61
  5. Step 5: Solve for x
    x = 34,654,429,729.61/207,192.65
  6. Step 6: Final answer
    x = 167,257.04

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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.