Home / 90,707.79-135,375.69-88,345.83

Finding the Fourth Proportional to 90,707.79, 135,375.69 and 88,345.83

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Solution

The fourth proportional to 90,707.79, 135,375.69 and 88,345.83 is: 131,850.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,707.79 : 135,375.69 = 88,345.83 : x
  2. Step 2: Convert to fraction form
    90,707.79/135,375.69 = 88,345.83/x
  3. Step 3: Cross multiply
    90,707.79x = 135,375.69 × 88,345.83
  4. Step 4: Simplify right side
    90,707.79x = 11,959,877,694.87
  5. Step 5: Solve for x
    x = 11,959,877,694.87/90,707.79
  6. Step 6: Final answer
    x = 131,850.61

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.