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Finding the Fourth Proportional to 198,366.25, 273,932.25 and 138,101.67

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Solution

The fourth proportional to 198,366.25, 273,932.25 and 138,101.67 is: 190,710.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,366.25 : 273,932.25 = 138,101.67 : x
  2. Step 2: Convert to fraction form
    198,366.25/273,932.25 = 138,101.67/x
  3. Step 3: Cross multiply
    198,366.25x = 273,932.25 × 138,101.67
  4. Step 4: Simplify right side
    198,366.25x = 37,830,500,501.35
  5. Step 5: Solve for x
    x = 37,830,500,501.35/198,366.25
  6. Step 6: Final answer
    x = 190,710.37

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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.