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Finding the Fourth Proportional to 101,515.40, 152,187.47 and 63,992.78

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Solution

The fourth proportional to 101,515.40, 152,187.47 and 63,992.78 is: 95,935.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,515.40 : 152,187.47 = 63,992.78 : x
  2. Step 2: Convert to fraction form
    101,515.40/152,187.47 = 63,992.78/x
  3. Step 3: Cross multiply
    101,515.40x = 152,187.47 × 63,992.78
  4. Step 4: Simplify right side
    101,515.40x = 9,738,898,205.57
  5. Step 5: Solve for x
    x = 9,738,898,205.57/101,515.40
  6. Step 6: Final answer
    x = 95,935.19

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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.