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Finding the Fourth Proportional to 172,571.76, 238,149 and 97,120.08

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Solution

The fourth proportional to 172,571.76, 238,149 and 97,120.08 is: 134,025.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,571.76 : 238,149 = 97,120.08 : x
  2. Step 2: Convert to fraction form
    172,571.76/238,149 = 97,120.08/x
  3. Step 3: Cross multiply
    172,571.76x = 238,149 × 97,120.08
  4. Step 4: Simplify right side
    172,571.76x = 23,129,049,931.92
  5. Step 5: Solve for x
    x = 23,129,049,931.92/172,571.76
  6. Step 6: Final answer
    x = 134,025.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.