Home / 91,576.14-137,988.21-75,300.78

Finding the Fourth Proportional to 91,576.14, 137,988.21 and 75,300.78

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Solution

The fourth proportional to 91,576.14, 137,988.21 and 75,300.78 is: 113,464.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,576.14 : 137,988.21 = 75,300.78 : x
  2. Step 2: Convert to fraction form
    91,576.14/137,988.21 = 75,300.78/x
  3. Step 3: Cross multiply
    91,576.14x = 137,988.21 × 75,300.78
  4. Step 4: Simplify right side
    91,576.14x = 10,390,619,843.80
  5. Step 5: Solve for x
    x = 10,390,619,843.80/91,576.14
  6. Step 6: Final answer
    x = 113,464.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.