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Finding the Fourth Proportional to 161,147.10, 241,720.65 and 72,443.10

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Solution

The fourth proportional to 161,147.10, 241,720.65 and 72,443.10 is: 108,664.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,147.10 : 241,720.65 = 72,443.10 : x
  2. Step 2: Convert to fraction form
    161,147.10/241,720.65 = 72,443.10/x
  3. Step 3: Cross multiply
    161,147.10x = 241,720.65 × 72,443.10
  4. Step 4: Simplify right side
    161,147.10x = 17,510,993,220.02
  5. Step 5: Solve for x
    x = 17,510,993,220.02/161,147.10
  6. Step 6: Final answer
    x = 108,664.65

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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.