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Finding the Fourth Proportional to 131,615.20, 197,293.20 and 65,065.60

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Solution

The fourth proportional to 131,615.20, 197,293.20 and 65,065.60 is: 97,534.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,615.20 : 197,293.20 = 65,065.60 : x
  2. Step 2: Convert to fraction form
    131,615.20/197,293.20 = 65,065.60/x
  3. Step 3: Cross multiply
    131,615.20x = 197,293.20 × 65,065.60
  4. Step 4: Simplify right side
    131,615.20x = 12,837,000,433.92
  5. Step 5: Solve for x
    x = 12,837,000,433.92/131,615.20
  6. Step 6: Final answer
    x = 97,534.33

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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.