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Finding the Fourth Proportional to 152,693.28, 210,716.78 and 85,625.28

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Solution

The fourth proportional to 152,693.28, 210,716.78 and 85,625.28 is: 118,162.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,693.28 : 210,716.78 = 85,625.28 : x
  2. Step 2: Convert to fraction form
    152,693.28/210,716.78 = 85,625.28/x
  3. Step 3: Cross multiply
    152,693.28x = 210,716.78 × 85,625.28
  4. Step 4: Simplify right side
    152,693.28x = 18,042,682,860.07
  5. Step 5: Solve for x
    x = 18,042,682,860.07/152,693.28
  6. Step 6: Final answer
    x = 118,162.91

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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.