Home / 92,958.40-139,729.20-91,208.80

Finding the Fourth Proportional to 92,958.40, 139,729.20 and 91,208.80

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Solution

The fourth proportional to 92,958.40, 139,729.20 and 91,208.80 is: 137,099.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,958.40 : 139,729.20 = 91,208.80 : x
  2. Step 2: Convert to fraction form
    92,958.40/139,729.20 = 91,208.80/x
  3. Step 3: Cross multiply
    92,958.40x = 139,729.20 × 91,208.80
  4. Step 4: Simplify right side
    92,958.40x = 12,744,532,656.96
  5. Step 5: Solve for x
    x = 12,744,532,656.96/92,958.40
  6. Step 6: Final answer
    x = 137,099.31

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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.