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Finding the Fourth Proportional to 139,459.80, 192,456.02 and 75,797.60

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Solution

The fourth proportional to 139,459.80, 192,456.02 and 75,797.60 is: 104,601.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,459.80 : 192,456.02 = 75,797.60 : x
  2. Step 2: Convert to fraction form
    139,459.80/192,456.02 = 75,797.60/x
  3. Step 3: Cross multiply
    139,459.80x = 192,456.02 × 75,797.60
  4. Step 4: Simplify right side
    139,459.80x = 14,587,704,421.55
  5. Step 5: Solve for x
    x = 14,587,704,421.55/139,459.80
  6. Step 6: Final answer
    x = 104,601.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.