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Finding the Fourth Proportional to 172,235.88, 258,459.93 and 108,968.85

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Solution

The fourth proportional to 172,235.88, 258,459.93 and 108,968.85 is: 163,520.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,235.88 : 258,459.93 = 108,968.85 : x
  2. Step 2: Convert to fraction form
    172,235.88/258,459.93 = 108,968.85/x
  3. Step 3: Cross multiply
    172,235.88x = 258,459.93 × 108,968.85
  4. Step 4: Simplify right side
    172,235.88x = 28,164,081,343.18
  5. Step 5: Solve for x
    x = 28,164,081,343.18/172,235.88
  6. Step 6: Final answer
    x = 163,520.41

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1.5x scale

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.