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Finding the Fourth Proportional to 161,972.01, 243,028.18 and 87,004.68

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Solution

The fourth proportional to 161,972.01, 243,028.18 and 87,004.68 is: 130,544.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,972.01 : 243,028.18 = 87,004.68 : x
  2. Step 2: Convert to fraction form
    161,972.01/243,028.18 = 87,004.68/x
  3. Step 3: Cross multiply
    161,972.01x = 243,028.18 × 87,004.68
  4. Step 4: Simplify right side
    161,972.01x = 21,144,589,031.88
  5. Step 5: Solve for x
    x = 21,144,589,031.88/161,972.01
  6. Step 6: Final answer
    x = 130,544.71

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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.