Home / 157,635.45-217,540.08-86,018.49

Finding the Fourth Proportional to 157,635.45, 217,540.08 and 86,018.49

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Solution

The fourth proportional to 157,635.45, 217,540.08 and 86,018.49 is: 118,707.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,635.45 : 217,540.08 = 86,018.49 : x
  2. Step 2: Convert to fraction form
    157,635.45/217,540.08 = 86,018.49/x
  3. Step 3: Cross multiply
    157,635.45x = 217,540.08 × 86,018.49
  4. Step 4: Simplify right side
    157,635.45x = 18,712,469,196.08
  5. Step 5: Solve for x
    x = 18,712,469,196.08/157,635.45
  6. Step 6: Final answer
    x = 118,707.24

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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.