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Finding the Fourth Proportional to 154,489.01, 231,757.20 and 65,718.68

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Solution

The fourth proportional to 154,489.01, 231,757.20 and 65,718.68 is: 98,588.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,489.01 : 231,757.20 = 65,718.68 : x
  2. Step 2: Convert to fraction form
    154,489.01/231,757.20 = 65,718.68/x
  3. Step 3: Cross multiply
    154,489.01x = 231,757.20 × 65,718.68
  4. Step 4: Simplify right side
    154,489.01x = 15,230,776,105.71
  5. Step 5: Solve for x
    x = 15,230,776,105.71/154,489.01
  6. Step 6: Final answer
    x = 98,588.09

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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.