Home / 157,916.17-217,920.72-86,296.62

Finding the Fourth Proportional to 157,916.17, 217,920.72 and 86,296.62

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Solution

The fourth proportional to 157,916.17, 217,920.72 and 86,296.62 is: 119,087.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,916.17 : 217,920.72 = 86,296.62 : x
  2. Step 2: Convert to fraction form
    157,916.17/217,920.72 = 86,296.62/x
  3. Step 3: Cross multiply
    157,916.17x = 217,920.72 × 86,296.62
  4. Step 4: Simplify right side
    157,916.17x = 18,805,821,563.97
  5. Step 5: Solve for x
    x = 18,805,821,563.97/157,916.17
  6. Step 6: Final answer
    x = 119,087.37

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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.