Home / 157,876.23-217,857.83-86,241.05

Finding the Fourth Proportional to 157,876.23, 217,857.83 and 86,241.05

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Solution

The fourth proportional to 157,876.23, 217,857.83 and 86,241.05 is: 119,006.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,876.23 : 217,857.83 = 86,241.05 : x
  2. Step 2: Convert to fraction form
    157,876.23/217,857.83 = 86,241.05/x
  3. Step 3: Cross multiply
    157,876.23x = 217,857.83 × 86,241.05
  4. Step 4: Simplify right side
    157,876.23x = 18,788,286,489.43
  5. Step 5: Solve for x
    x = 18,788,286,489.43/157,876.23
  6. Step 6: Final answer
    x = 119,006.43

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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.