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Finding the Fourth Proportional to 97,813.80, 146,259.90 and 72,930.60

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Solution

The fourth proportional to 97,813.80, 146,259.90 and 72,930.60 is: 109,052.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,813.80 : 146,259.90 = 72,930.60 : x
  2. Step 2: Convert to fraction form
    97,813.80/146,259.90 = 72,930.60/x
  3. Step 3: Cross multiply
    97,813.80x = 146,259.90 × 72,930.60
  4. Step 4: Simplify right side
    97,813.80x = 10,666,822,262.94
  5. Step 5: Solve for x
    x = 10,666,822,262.94/97,813.80
  6. Step 6: Final answer
    x = 109,052.32

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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.