Home / 115,796.08-172,720.55-105,165.64

Finding the Fourth Proportional to 115,796.08, 172,720.55 and 105,165.64

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Solution

The fourth proportional to 115,796.08, 172,720.55 and 105,165.64 is: 156,864.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,796.08 : 172,720.55 = 105,165.64 : x
  2. Step 2: Convert to fraction form
    115,796.08/172,720.55 = 105,165.64/x
  3. Step 3: Cross multiply
    115,796.08x = 172,720.55 × 105,165.64
  4. Step 4: Simplify right side
    115,796.08x = 18,164,267,181.90
  5. Step 5: Solve for x
    x = 18,164,267,181.90/115,796.08
  6. Step 6: Final answer
    x = 156,864.27

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.