Home / 91,266.15-136,629.66-67,415.33

Finding the Fourth Proportional to 91,266.15, 136,629.66 and 67,415.33

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Solution

The fourth proportional to 91,266.15, 136,629.66 and 67,415.33 is: 100,923.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,266.15 : 136,629.66 = 67,415.33 : x
  2. Step 2: Convert to fraction form
    91,266.15/136,629.66 = 67,415.33/x
  3. Step 3: Cross multiply
    91,266.15x = 136,629.66 × 67,415.33
  4. Step 4: Simplify right side
    91,266.15x = 9,210,932,933.54
  5. Step 5: Solve for x
    x = 9,210,932,933.54/91,266.15
  6. Step 6: Final answer
    x = 100,923.87

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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.