Home / 188,022.50-259,471.05-103,139.77

Finding the Fourth Proportional to 188,022.50, 259,471.05 and 103,139.77

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Solution

The fourth proportional to 188,022.50, 259,471.05 and 103,139.77 is: 142,332.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,022.50 : 259,471.05 = 103,139.77 : x
  2. Step 2: Convert to fraction form
    188,022.50/259,471.05 = 103,139.77/x
  3. Step 3: Cross multiply
    188,022.50x = 259,471.05 × 103,139.77
  4. Step 4: Simplify right side
    188,022.50x = 26,761,783,121.30
  5. Step 5: Solve for x
    x = 26,761,783,121.30/188,022.50
  6. Step 6: Final answer
    x = 142,332.88

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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.