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Finding the Fourth Proportional to 172,742.92, 259,149.22 and 72,903.22

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Solution

The fourth proportional to 172,742.92, 259,149.22 and 72,903.22 is: 109,369.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,742.92 : 259,149.22 = 72,903.22 : x
  2. Step 2: Convert to fraction form
    172,742.92/259,149.22 = 72,903.22/x
  3. Step 3: Cross multiply
    172,742.92x = 259,149.22 × 72,903.22
  4. Step 4: Simplify right side
    172,742.92x = 18,892,812,598.49
  5. Step 5: Solve for x
    x = 18,892,812,598.49/172,742.92
  6. Step 6: Final answer
    x = 109,369.53

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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.