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Finding the Fourth Proportional to 131,751.40, 197,756.70 and 65,266.60

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Solution

The fourth proportional to 131,751.40, 197,756.70 and 65,266.60 is: 97,964.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,751.40 : 197,756.70 = 65,266.60 : x
  2. Step 2: Convert to fraction form
    131,751.40/197,756.70 = 65,266.60/x
  3. Step 3: Cross multiply
    131,751.40x = 197,756.70 × 65,266.60
  4. Step 4: Simplify right side
    131,751.40x = 12,906,907,436.22
  5. Step 5: Solve for x
    x = 12,906,907,436.22/131,751.40
  6. Step 6: Final answer
    x = 97,964.10

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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.