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Finding the Fourth Proportional to 98,171.60, 146,911.80 and 89,877.20

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Solution

The fourth proportional to 98,171.60, 146,911.80 and 89,877.20 is: 134,499.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,171.60 : 146,911.80 = 89,877.20 : x
  2. Step 2: Convert to fraction form
    98,171.60/146,911.80 = 89,877.20/x
  3. Step 3: Cross multiply
    98,171.60x = 146,911.80 × 89,877.20
  4. Step 4: Simplify right side
    98,171.60x = 13,204,021,230.96
  5. Step 5: Solve for x
    x = 13,204,021,230.96/98,171.60
  6. Step 6: Final answer
    x = 134,499.40

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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.