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Finding the Fourth Proportional to 160,725.89, 221,786.79 and 89,099.84

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Solution

The fourth proportional to 160,725.89, 221,786.79 and 89,099.84 is: 122,949.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,725.89 : 221,786.79 = 89,099.84 : x
  2. Step 2: Convert to fraction form
    160,725.89/221,786.79 = 89,099.84/x
  3. Step 3: Cross multiply
    160,725.89x = 221,786.79 × 89,099.84
  4. Step 4: Simplify right side
    160,725.89x = 19,761,167,503.11
  5. Step 5: Solve for x
    x = 19,761,167,503.11/160,725.89
  6. Step 6: Final answer
    x = 122,949.50

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1.5x scale

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.