Home / 198,822.34-298,141.35-74,129.86

Finding the Fourth Proportional to 198,822.34, 298,141.35 and 74,129.86

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Solution

The fourth proportional to 198,822.34, 298,141.35 and 74,129.86 is: 111,160.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,822.34 : 298,141.35 = 74,129.86 : x
  2. Step 2: Convert to fraction form
    198,822.34/298,141.35 = 74,129.86/x
  3. Step 3: Cross multiply
    198,822.34x = 298,141.35 × 74,129.86
  4. Step 4: Simplify right side
    198,822.34x = 22,101,176,535.71
  5. Step 5: Solve for x
    x = 22,101,176,535.71/198,822.34
  6. Step 6: Final answer
    x = 111,160.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.