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Finding the Fourth Proportional to 172,448.55, 237,986.78 and 96,997.05

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Solution

The fourth proportional to 172,448.55, 237,986.78 and 96,997.05 is: 133,860.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,448.55 : 237,986.78 = 96,997.05 : x
  2. Step 2: Convert to fraction form
    172,448.55/237,986.78 = 96,997.05/x
  3. Step 3: Cross multiply
    172,448.55x = 237,986.78 × 96,997.05
  4. Step 4: Simplify right side
    172,448.55x = 23,084,015,114.01
  5. Step 5: Solve for x
    x = 23,084,015,114.01/172,448.55
  6. Step 6: Final answer
    x = 133,860.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.