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Finding the Fourth Proportional to 198,355.61, 273,729.76 and 107,710.77

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Solution

The fourth proportional to 198,355.61, 273,729.76 and 107,710.77 is: 148,640.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,355.61 : 273,729.76 = 107,710.77 : x
  2. Step 2: Convert to fraction form
    198,355.61/273,729.76 = 107,710.77/x
  3. Step 3: Cross multiply
    198,355.61x = 273,729.76 × 107,710.77
  4. Step 4: Simplify right side
    198,355.61x = 29,483,643,367.29
  5. Step 5: Solve for x
    x = 29,483,643,367.29/198,355.61
  6. Step 6: Final answer
    x = 148,640.33

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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.