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Finding the Fourth Proportional to 161,162.40, 241,660.05 and 85,302.06

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Solution

The fourth proportional to 161,162.40, 241,660.05 and 85,302.06 is: 127,908.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,162.40 : 241,660.05 = 85,302.06 : x
  2. Step 2: Convert to fraction form
    161,162.40/241,660.05 = 85,302.06/x
  3. Step 3: Cross multiply
    161,162.40x = 241,660.05 × 85,302.06
  4. Step 4: Simplify right side
    161,162.40x = 20,614,100,084.70
  5. Step 5: Solve for x
    x = 20,614,100,084.70/161,162.40
  6. Step 6: Final answer
    x = 127,908.87

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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.