Home / 117,021.30-161,489.25-63,306.20

Finding the Fourth Proportional to 117,021.30, 161,489.25 and 63,306.20

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Solution

The fourth proportional to 117,021.30, 161,489.25 and 63,306.20 is: 87,362.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,021.30 : 161,489.25 = 63,306.20 : x
  2. Step 2: Convert to fraction form
    117,021.30/161,489.25 = 63,306.20/x
  3. Step 3: Cross multiply
    117,021.30x = 161,489.25 × 63,306.20
  4. Step 4: Simplify right side
    117,021.30x = 10,223,269,950.90
  5. Step 5: Solve for x
    x = 10,223,269,950.90/117,021.30
  6. Step 6: Final answer
    x = 87,362.47

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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.