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Finding the Fourth Proportional to 172,451.43, 237,980.53 and 96,999.75

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Solution

The fourth proportional to 172,451.43, 237,980.53 and 96,999.75 is: 133,858.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,451.43 : 237,980.53 = 96,999.75 : x
  2. Step 2: Convert to fraction form
    172,451.43/237,980.53 = 96,999.75/x
  3. Step 3: Cross multiply
    172,451.43x = 237,980.53 × 96,999.75
  4. Step 4: Simplify right side
    172,451.43x = 23,084,051,914.87
  5. Step 5: Solve for x
    x = 23,084,051,914.87/172,451.43
  6. Step 6: Final answer
    x = 133,858.28

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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.