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Finding the Fourth Proportional to 169,423.28, 254,150.64 and 120,939.56

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Solution

The fourth proportional to 169,423.28, 254,150.64 and 120,939.56 is: 181,420.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,423.28 : 254,150.64 = 120,939.56 : x
  2. Step 2: Convert to fraction form
    169,423.28/254,150.64 = 120,939.56/x
  3. Step 3: Cross multiply
    169,423.28x = 254,150.64 × 120,939.56
  4. Step 4: Simplify right side
    169,423.28x = 30,736,866,575.32
  5. Step 5: Solve for x
    x = 30,736,866,575.32/169,423.28
  6. Step 6: Final answer
    x = 181,420.56

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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.