Home / 193,134.40-289,701.60-68,459.20

Finding the Fourth Proportional to 193,134.40, 289,701.60 and 68,459.20

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Solution

The fourth proportional to 193,134.40, 289,701.60 and 68,459.20 is: 102,688.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,134.40 : 289,701.60 = 68,459.20 : x
  2. Step 2: Convert to fraction form
    193,134.40/289,701.60 = 68,459.20/x
  3. Step 3: Cross multiply
    193,134.40x = 289,701.60 × 68,459.20
  4. Step 4: Simplify right side
    193,134.40x = 19,832,739,774.72
  5. Step 5: Solve for x
    x = 19,832,739,774.72/193,134.40
  6. Step 6: Final answer
    x = 102,688.80

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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.