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Finding the Fourth Proportional to 137,907.40, 206,861.10 and 97,666.60

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Solution

The fourth proportional to 137,907.40, 206,861.10 and 97,666.60 is: 146,499.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,907.40 : 206,861.10 = 97,666.60 : x
  2. Step 2: Convert to fraction form
    137,907.40/206,861.10 = 97,666.60/x
  3. Step 3: Cross multiply
    137,907.40x = 206,861.10 × 97,666.60
  4. Step 4: Simplify right side
    137,907.40x = 20,203,420,309.26
  5. Step 5: Solve for x
    x = 20,203,420,309.26/137,907.40
  6. Step 6: Final answer
    x = 146,499.90

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1.5x scale

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.