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Finding the Fourth Proportional to 172,960.70, 259,441.05 and 143,436.20

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Solution

The fourth proportional to 172,960.70, 259,441.05 and 143,436.20 is: 215,154.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,960.70 : 259,441.05 = 143,436.20 : x
  2. Step 2: Convert to fraction form
    172,960.70/259,441.05 = 143,436.20/x
  3. Step 3: Cross multiply
    172,960.70x = 259,441.05 × 143,436.20
  4. Step 4: Simplify right side
    172,960.70x = 37,213,238,336.01
  5. Step 5: Solve for x
    x = 37,213,238,336.01/172,960.70
  6. Step 6: Final answer
    x = 215,154.30

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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.