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Finding the Fourth Proportional to 161,720.40, 241,997.40 and 109,232.40

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Solution

The fourth proportional to 161,720.40, 241,997.40 and 109,232.40 is: 163,454.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,720.40 : 241,997.40 = 109,232.40 : x
  2. Step 2: Convert to fraction form
    161,720.40/241,997.40 = 109,232.40/x
  3. Step 3: Cross multiply
    161,720.40x = 241,997.40 × 109,232.40
  4. Step 4: Simplify right side
    161,720.40x = 26,433,956,795.76
  5. Step 5: Solve for x
    x = 26,433,956,795.76/161,720.40
  6. Step 6: Final answer
    x = 163,454.68

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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.