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Finding the Fourth Proportional to 111,395.73, 153,735.82 and 61,104.45

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Solution

The fourth proportional to 111,395.73, 153,735.82 and 61,104.45 is: 84,329.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,395.73 : 153,735.82 = 61,104.45 : x
  2. Step 2: Convert to fraction form
    111,395.73/153,735.82 = 61,104.45/x
  3. Step 3: Cross multiply
    111,395.73x = 153,735.82 × 61,104.45
  4. Step 4: Simplify right side
    111,395.73x = 9,393,942,726.40
  5. Step 5: Solve for x
    x = 9,393,942,726.40/111,395.73
  6. Step 6: Final answer
    x = 84,329.47

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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.