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Finding the Fourth Proportional to 172,059.96, 257,989.50 and 66,755.91

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Solution

The fourth proportional to 172,059.96, 257,989.50 and 66,755.91 is: 100,094.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,059.96 : 257,989.50 = 66,755.91 : x
  2. Step 2: Convert to fraction form
    172,059.96/257,989.50 = 66,755.91/x
  3. Step 3: Cross multiply
    172,059.96x = 257,989.50 × 66,755.91
  4. Step 4: Simplify right side
    172,059.96x = 17,222,323,842.95
  5. Step 5: Solve for x
    x = 17,222,323,842.95/172,059.96
  6. Step 6: Final answer
    x = 100,094.90

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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.