Home / 109,047.88-163,363.26-91,391.48

Finding the Fourth Proportional to 109,047.88, 163,363.26 and 91,391.48

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Solution

The fourth proportional to 109,047.88, 163,363.26 and 91,391.48 is: 136,912.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,047.88 : 163,363.26 = 91,391.48 : x
  2. Step 2: Convert to fraction form
    109,047.88/163,363.26 = 91,391.48/x
  3. Step 3: Cross multiply
    109,047.88x = 163,363.26 × 91,391.48
  4. Step 4: Simplify right side
    109,047.88x = 14,930,010,109.02
  5. Step 5: Solve for x
    x = 14,930,010,109.02/109,047.88
  6. Step 6: Final answer
    x = 136,912.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.