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Finding the Fourth Proportional to 159,616.88, 220,271.32 and 91,638.26

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Solution

The fourth proportional to 159,616.88, 220,271.32 and 91,638.26 is: 126,460.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,616.88 : 220,271.32 = 91,638.26 : x
  2. Step 2: Convert to fraction form
    159,616.88/220,271.32 = 91,638.26/x
  3. Step 3: Cross multiply
    159,616.88x = 220,271.32 × 91,638.26
  4. Step 4: Simplify right side
    159,616.88x = 20,185,280,492.70
  5. Step 5: Solve for x
    x = 20,185,280,492.70/159,616.88
  6. Step 6: Final answer
    x = 126,460.81

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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.