Home / 91,126.28-136,688.58-28,796.80

Finding the Fourth Proportional to 91,126.28, 136,688.58 and 28,796.80

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Solution

The fourth proportional to 91,126.28, 136,688.58 and 28,796.80 is: 43,194.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,126.28 : 136,688.58 = 28,796.80 : x
  2. Step 2: Convert to fraction form
    91,126.28/136,688.58 = 28,796.80/x
  3. Step 3: Cross multiply
    91,126.28x = 136,688.58 × 28,796.80
  4. Step 4: Simplify right side
    91,126.28x = 3,936,193,700.54
  5. Step 5: Solve for x
    x = 3,936,193,700.54/91,126.28
  6. Step 6: Final answer
    x = 43,194.93

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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.