Home / 91,544.46-137,129.58-67,878.69

Finding the Fourth Proportional to 91,544.46, 137,129.58 and 67,878.69

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Solution

The fourth proportional to 91,544.46, 137,129.58 and 67,878.69 is: 101,679.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,544.46 : 137,129.58 = 67,878.69 : x
  2. Step 2: Convert to fraction form
    91,544.46/137,129.58 = 67,878.69/x
  3. Step 3: Cross multiply
    91,544.46x = 137,129.58 × 67,878.69
  4. Step 4: Simplify right side
    91,544.46x = 9,308,176,250.65
  5. Step 5: Solve for x
    x = 9,308,176,250.65/91,544.46
  6. Step 6: Final answer
    x = 101,679.30

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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.