Home / 172,977.21-259,276.26-67,680.45

Finding the Fourth Proportional to 172,977.21, 259,276.26 and 67,680.45

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Solution

The fourth proportional to 172,977.21, 259,276.26 and 67,680.45 is: 101,446.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,977.21 : 259,276.26 = 67,680.45 : x
  2. Step 2: Convert to fraction form
    172,977.21/259,276.26 = 67,680.45/x
  3. Step 3: Cross multiply
    172,977.21x = 259,276.26 × 67,680.45
  4. Step 4: Simplify right side
    172,977.21x = 17,547,933,951.12
  5. Step 5: Solve for x
    x = 17,547,933,951.12/172,977.21
  6. Step 6: Final answer
    x = 101,446.51

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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.