Home / 157,836.36-217,805.85-86,215.35

Finding the Fourth Proportional to 157,836.36, 217,805.85 and 86,215.35

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Solution

The fourth proportional to 157,836.36, 217,805.85 and 86,215.35 is: 118,972.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,836.36 : 217,805.85 = 86,215.35 : x
  2. Step 2: Convert to fraction form
    157,836.36/217,805.85 = 86,215.35/x
  3. Step 3: Cross multiply
    157,836.36x = 217,805.85 × 86,215.35
  4. Step 4: Simplify right side
    157,836.36x = 18,778,207,589.80
  5. Step 5: Solve for x
    x = 18,778,207,589.80/157,836.36
  6. Step 6: Final answer
    x = 118,972.63

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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.