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Finding the Fourth Proportional to 172,980.87, 259,482.26 and 73,122.45

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Solution

The fourth proportional to 172,980.87, 259,482.26 and 73,122.45 is: 109,688.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,980.87 : 259,482.26 = 73,122.45 : x
  2. Step 2: Convert to fraction form
    172,980.87/259,482.26 = 73,122.45/x
  3. Step 3: Cross multiply
    172,980.87x = 259,482.26 × 73,122.45
  4. Step 4: Simplify right side
    172,980.87x = 18,973,978,217.12
  5. Step 5: Solve for x
    x = 18,973,978,217.12/172,980.87
  6. Step 6: Final answer
    x = 109,688.30

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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.