Home / 117,021.71-161,489.76-63,306.56

Finding the Fourth Proportional to 117,021.71, 161,489.76 and 63,306.56

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Solution

The fourth proportional to 117,021.71, 161,489.76 and 63,306.56 is: 87,362.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,021.71 : 161,489.76 = 63,306.56 : x
  2. Step 2: Convert to fraction form
    117,021.71/161,489.76 = 63,306.56/x
  3. Step 3: Cross multiply
    117,021.71x = 161,489.76 × 63,306.56
  4. Step 4: Simplify right side
    117,021.71x = 10,223,361,180.83
  5. Step 5: Solve for x
    x = 10,223,361,180.83/117,021.71
  6. Step 6: Final answer
    x = 87,362.94

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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.