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Finding the Fourth Proportional to 172,941.57, 259,425.72 and 66,376.80

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Solution

The fourth proportional to 172,941.57, 259,425.72 and 66,376.80 is: 99,570.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,941.57 : 259,425.72 = 66,376.80 : x
  2. Step 2: Convert to fraction form
    172,941.57/259,425.72 = 66,376.80/x
  3. Step 3: Cross multiply
    172,941.57x = 259,425.72 × 66,376.80
  4. Step 4: Simplify right side
    172,941.57x = 17,219,849,131.30
  5. Step 5: Solve for x
    x = 17,219,849,131.30/172,941.57
  6. Step 6: Final answer
    x = 99,570.33

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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.