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Finding the Fourth Proportional to 172,391.95, 237,749.46 and 120,682.56

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Solution

The fourth proportional to 172,391.95, 237,749.46 and 120,682.56 is: 166,435.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,391.95 : 237,749.46 = 120,682.56 : x
  2. Step 2: Convert to fraction form
    172,391.95/237,749.46 = 120,682.56/x
  3. Step 3: Cross multiply
    172,391.95x = 237,749.46 × 120,682.56
  4. Step 4: Simplify right side
    172,391.95x = 28,692,213,471.42
  5. Step 5: Solve for x
    x = 28,692,213,471.42/172,391.95
  6. Step 6: Final answer
    x = 166,435.92

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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.