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Finding the Fourth Proportional to 146,813.40, 220,220.10 and 76,829.40

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Solution

The fourth proportional to 146,813.40, 220,220.10 and 76,829.40 is: 115,244.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,813.40 : 220,220.10 = 76,829.40 : x
  2. Step 2: Convert to fraction form
    146,813.40/220,220.10 = 76,829.40/x
  3. Step 3: Cross multiply
    146,813.40x = 220,220.10 × 76,829.40
  4. Step 4: Simplify right side
    146,813.40x = 16,919,378,150.94
  5. Step 5: Solve for x
    x = 16,919,378,150.94/146,813.40
  6. Step 6: Final answer
    x = 115,244.10

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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.