Home / 198,558.41-297,670.14-86,153.90

Finding the Fourth Proportional to 198,558.41, 297,670.14 and 86,153.90

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Solution

The fourth proportional to 198,558.41, 297,670.14 and 86,153.90 is: 129,158.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,558.41 : 297,670.14 = 86,153.90 : x
  2. Step 2: Convert to fraction form
    198,558.41/297,670.14 = 86,153.90/x
  3. Step 3: Cross multiply
    198,558.41x = 297,670.14 × 86,153.90
  4. Step 4: Simplify right side
    198,558.41x = 25,645,441,986.20
  5. Step 5: Solve for x
    x = 25,645,441,986.20/198,558.41
  6. Step 6: Final answer
    x = 129,158.18

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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.