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Finding the Fourth Proportional to 137,324.40, 205,986.60 and 97,666.80

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Solution

The fourth proportional to 137,324.40, 205,986.60 and 97,666.80 is: 146,500.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,324.40 : 205,986.60 = 97,666.80 : x
  2. Step 2: Convert to fraction form
    137,324.40/205,986.60 = 97,666.80/x
  3. Step 3: Cross multiply
    137,324.40x = 205,986.60 × 97,666.80
  4. Step 4: Simplify right side
    137,324.40x = 20,118,052,064.88
  5. Step 5: Solve for x
    x = 20,118,052,064.88/137,324.40
  6. Step 6: Final answer
    x = 146,500.20

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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.