Home / 151,100.12-208,525.23-87,425.61

Finding the Fourth Proportional to 151,100.12, 208,525.23 and 87,425.61

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Solution

The fourth proportional to 151,100.12, 208,525.23 and 87,425.61 is: 120,651.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,100.12 : 208,525.23 = 87,425.61 : x
  2. Step 2: Convert to fraction form
    151,100.12/208,525.23 = 87,425.61/x
  3. Step 3: Cross multiply
    151,100.12x = 208,525.23 × 87,425.61
  4. Step 4: Simplify right side
    151,100.12x = 18,230,445,433.14
  5. Step 5: Solve for x
    x = 18,230,445,433.14/151,100.12
  6. Step 6: Final answer
    x = 120,651.43

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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.