Home / 133,138.07-199,753.75-83,159.65

Finding the Fourth Proportional to 133,138.07, 199,753.75 and 83,159.65

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Solution

The fourth proportional to 133,138.07, 199,753.75 and 83,159.65 is: 124,768.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,138.07 : 199,753.75 = 83,159.65 : x
  2. Step 2: Convert to fraction form
    133,138.07/199,753.75 = 83,159.65/x
  3. Step 3: Cross multiply
    133,138.07x = 199,753.75 × 83,159.65
  4. Step 4: Simplify right side
    133,138.07x = 16,611,451,541.15
  5. Step 5: Solve for x
    x = 16,611,451,541.15/133,138.07
  6. Step 6: Final answer
    x = 124,768.61

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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.