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Finding the Fourth Proportional to 172,803.60, 259,205.40 and 122,611.95

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Solution

The fourth proportional to 172,803.60, 259,205.40 and 122,611.95 is: 183,917.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,803.60 : 259,205.40 = 122,611.95 : x
  2. Step 2: Convert to fraction form
    172,803.60/259,205.40 = 122,611.95/x
  3. Step 3: Cross multiply
    172,803.60x = 259,205.40 × 122,611.95
  4. Step 4: Simplify right side
    172,803.60x = 31,781,679,544.53
  5. Step 5: Solve for x
    x = 31,781,679,544.53/172,803.60
  6. Step 6: Final answer
    x = 183,917.93

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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.