Home / 198,688.10-298,032.15-127,829.30

Finding the Fourth Proportional to 198,688.10, 298,032.15 and 127,829.30

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Solution

The fourth proportional to 198,688.10, 298,032.15 and 127,829.30 is: 191,743.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,688.10 : 298,032.15 = 127,829.30 : x
  2. Step 2: Convert to fraction form
    198,688.10/298,032.15 = 127,829.30/x
  3. Step 3: Cross multiply
    198,688.10x = 298,032.15 × 127,829.30
  4. Step 4: Simplify right side
    198,688.10x = 38,097,241,112.00
  5. Step 5: Solve for x
    x = 38,097,241,112.00/198,688.10
  6. Step 6: Final answer
    x = 191,743.95

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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.