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Finding the Fourth Proportional to 172,821.60, 259,232.40 and 88,840.80

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Solution

The fourth proportional to 172,821.60, 259,232.40 and 88,840.80 is: 133,261.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,821.60 : 259,232.40 = 88,840.80 : x
  2. Step 2: Convert to fraction form
    172,821.60/259,232.40 = 88,840.80/x
  3. Step 3: Cross multiply
    172,821.60x = 259,232.40 × 88,840.80
  4. Step 4: Simplify right side
    172,821.60x = 23,030,413,801.92
  5. Step 5: Solve for x
    x = 23,030,413,801.92/172,821.60
  6. Step 6: Final answer
    x = 133,261.20

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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.