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Finding the Fourth Proportional to 172,985.68, 259,774.98 and 106,817.32

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Solution

The fourth proportional to 172,985.68, 259,774.98 and 106,817.32 is: 160,409.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,985.68 : 259,774.98 = 106,817.32 : x
  2. Step 2: Convert to fraction form
    172,985.68/259,774.98 = 106,817.32/x
  3. Step 3: Cross multiply
    172,985.68x = 259,774.98 × 106,817.32
  4. Step 4: Simplify right side
    172,985.68x = 27,748,467,166.65
  5. Step 5: Solve for x
    x = 27,748,467,166.65/172,985.68
  6. Step 6: Final answer
    x = 160,409.04

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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.