Home / 91,708.80-137,563.20-82,851.45

Finding the Fourth Proportional to 91,708.80, 137,563.20 and 82,851.45

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Solution

The fourth proportional to 91,708.80, 137,563.20 and 82,851.45 is: 124,277.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,708.80 : 137,563.20 = 82,851.45 : x
  2. Step 2: Convert to fraction form
    91,708.80/137,563.20 = 82,851.45/x
  3. Step 3: Cross multiply
    91,708.80x = 137,563.20 × 82,851.45
  4. Step 4: Simplify right side
    91,708.80x = 11,397,310,586.64
  5. Step 5: Solve for x
    x = 11,397,310,586.64/91,708.80
  6. Step 6: Final answer
    x = 124,277.18

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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.