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Finding the Fourth Proportional to 154,814.94, 213,623.94 and 85,903.26

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Solution

The fourth proportional to 154,814.94, 213,623.94 and 85,903.26 is: 118,535.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,814.94 : 213,623.94 = 85,903.26 : x
  2. Step 2: Convert to fraction form
    154,814.94/213,623.94 = 85,903.26/x
  3. Step 3: Cross multiply
    154,814.94x = 213,623.94 × 85,903.26
  4. Step 4: Simplify right side
    154,814.94x = 18,350,992,860.04
  5. Step 5: Solve for x
    x = 18,350,992,860.04/154,814.94
  6. Step 6: Final answer
    x = 118,535.03

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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.