Home / 198,729.34-274,165.56-112,670.20

Finding the Fourth Proportional to 198,729.34, 274,165.56 and 112,670.20

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Solution

The fourth proportional to 198,729.34, 274,165.56 and 112,670.20 is: 155,438.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,729.34 : 274,165.56 = 112,670.20 : x
  2. Step 2: Convert to fraction form
    198,729.34/274,165.56 = 112,670.20/x
  3. Step 3: Cross multiply
    198,729.34x = 274,165.56 × 112,670.20
  4. Step 4: Simplify right side
    198,729.34x = 30,890,288,478.31
  5. Step 5: Solve for x
    x = 30,890,288,478.31/198,729.34
  6. Step 6: Final answer
    x = 155,438.99

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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.