Home / 143,529.65-215,097.64-90,845.09

Finding the Fourth Proportional to 143,529.65, 215,097.64 and 90,845.09

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Solution

The fourth proportional to 143,529.65, 215,097.64 and 90,845.09 is: 136,143.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,529.65 : 215,097.64 = 90,845.09 : x
  2. Step 2: Convert to fraction form
    143,529.65/215,097.64 = 90,845.09/x
  3. Step 3: Cross multiply
    143,529.65x = 215,097.64 × 90,845.09
  4. Step 4: Simplify right side
    143,529.65x = 19,540,562,934.87
  5. Step 5: Solve for x
    x = 19,540,562,934.87/143,529.65
  6. Step 6: Final answer
    x = 136,143.05

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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.