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Finding the Fourth Proportional to 159,871.84, 220,623.28 and 88,251.80

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Solution

The fourth proportional to 159,871.84, 220,623.28 and 88,251.80 is: 121,787.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,871.84 : 220,623.28 = 88,251.80 : x
  2. Step 2: Convert to fraction form
    159,871.84/220,623.28 = 88,251.80/x
  3. Step 3: Cross multiply
    159,871.84x = 220,623.28 × 88,251.80
  4. Step 4: Simplify right side
    159,871.84x = 19,470,401,581.90
  5. Step 5: Solve for x
    x = 19,470,401,581.90/159,871.84
  6. Step 6: Final answer
    x = 121,787.56

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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.