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Finding the Fourth Proportional to 115,467.20, 172,909.20 and 110,218.40

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Solution

The fourth proportional to 115,467.20, 172,909.20 and 110,218.40 is: 165,049.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,467.20 : 172,909.20 = 110,218.40 : x
  2. Step 2: Convert to fraction form
    115,467.20/172,909.20 = 110,218.40/x
  3. Step 3: Cross multiply
    115,467.20x = 172,909.20 × 110,218.40
  4. Step 4: Simplify right side
    115,467.20x = 19,057,775,369.28
  5. Step 5: Solve for x
    x = 19,057,775,369.28/115,467.20
  6. Step 6: Final answer
    x = 165,049.26

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1.5x scale

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.