Home / 150,917.45-208,123.20-99,143.10

Finding the Fourth Proportional to 150,917.45, 208,123.20 and 99,143.10

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Solution

The fourth proportional to 150,917.45, 208,123.20 and 99,143.10 is: 136,723.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,917.45 : 208,123.20 = 99,143.10 : x
  2. Step 2: Convert to fraction form
    150,917.45/208,123.20 = 99,143.10/x
  3. Step 3: Cross multiply
    150,917.45x = 208,123.20 × 99,143.10
  4. Step 4: Simplify right side
    150,917.45x = 20,633,979,229.92
  5. Step 5: Solve for x
    x = 20,633,979,229.92/150,917.45
  6. Step 6: Final answer
    x = 136,723.62

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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.