Home / 150,128.46-207,087.03-99,141.66

Finding the Fourth Proportional to 150,128.46, 207,087.03 and 99,141.66

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Solution

The fourth proportional to 150,128.46, 207,087.03 and 99,141.66 is: 136,755.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,128.46 : 207,087.03 = 99,141.66 : x
  2. Step 2: Convert to fraction form
    150,128.46/207,087.03 = 99,141.66/x
  3. Step 3: Cross multiply
    150,128.46x = 207,087.03 × 99,141.66
  4. Step 4: Simplify right side
    150,128.46x = 20,530,951,918.67
  5. Step 5: Solve for x
    x = 20,530,951,918.67/150,128.46
  6. Step 6: Final answer
    x = 136,755.90

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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.