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Finding the Fourth Proportional to 111,222, 153,486.40 and 60,922.80

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Solution

The fourth proportional to 111,222, 153,486.40 and 60,922.80 is: 84,073.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,222 : 153,486.40 = 60,922.80 : x
  2. Step 2: Convert to fraction form
    111,222/153,486.40 = 60,922.80/x
  3. Step 3: Cross multiply
    111,222x = 153,486.40 × 60,922.80
  4. Step 4: Simplify right side
    111,222x = 9,350,821,249.92
  5. Step 5: Solve for x
    x = 9,350,821,249.92/111,222
  6. Step 6: Final answer
    x = 84,073.49

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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.