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Finding the Fourth Proportional to 172,379.88, 237,893.40 and 100,801.80

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Solution

The fourth proportional to 172,379.88, 237,893.40 and 100,801.80 is: 139,111.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,379.88 : 237,893.40 = 100,801.80 : x
  2. Step 2: Convert to fraction form
    172,379.88/237,893.40 = 100,801.80/x
  3. Step 3: Cross multiply
    172,379.88x = 237,893.40 × 100,801.80
  4. Step 4: Simplify right side
    172,379.88x = 23,980,082,928.12
  5. Step 5: Solve for x
    x = 23,980,082,928.12/172,379.88
  6. Step 6: Final answer
    x = 139,111.84

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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.