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Finding the Fourth Proportional to 111,563.48, 153,942.12 and 65,625.21

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Solution

The fourth proportional to 111,563.48, 153,942.12 and 65,625.21 is: 90,553.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,563.48 : 153,942.12 = 65,625.21 : x
  2. Step 2: Convert to fraction form
    111,563.48/153,942.12 = 65,625.21/x
  3. Step 3: Cross multiply
    111,563.48x = 153,942.12 × 65,625.21
  4. Step 4: Simplify right side
    111,563.48x = 10,102,483,952.85
  5. Step 5: Solve for x
    x = 10,102,483,952.85/111,563.48
  6. Step 6: Final answer
    x = 90,553.68

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1.5x scale

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.