Home / 143,528.65-215,096.14-90,844.09

Finding the Fourth Proportional to 143,528.65, 215,096.14 and 90,844.09

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Solution

The fourth proportional to 143,528.65, 215,096.14 and 90,844.09 is: 136,141.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,528.65 : 215,096.14 = 90,844.09 : x
  2. Step 2: Convert to fraction form
    143,528.65/215,096.14 = 90,844.09/x
  3. Step 3: Cross multiply
    143,528.65x = 215,096.14 × 90,844.09
  4. Step 4: Simplify right side
    143,528.65x = 19,540,211,571.11
  5. Step 5: Solve for x
    x = 19,540,211,571.11/143,528.65
  6. Step 6: Final answer
    x = 136,141.55

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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.