Home / 157,917.36-217,916.76-86,298

Finding the Fourth Proportional to 157,917.36, 217,916.76 and 86,298

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Solution

The fourth proportional to 157,917.36, 217,916.76 and 86,298 is: 119,086.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,917.36 : 217,916.76 = 86,298 : x
  2. Step 2: Convert to fraction form
    157,917.36/217,916.76 = 86,298/x
  3. Step 3: Cross multiply
    157,917.36x = 217,916.76 × 86,298
  4. Step 4: Simplify right side
    157,917.36x = 18,805,780,554.48
  5. Step 5: Solve for x
    x = 18,805,780,554.48/157,917.36
  6. Step 6: Final answer
    x = 119,086.21

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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.