Home / 91,818.20-137,727.30-76,266.20

Finding the Fourth Proportional to 91,818.20, 137,727.30 and 76,266.20

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Solution

The fourth proportional to 91,818.20, 137,727.30 and 76,266.20 is: 114,399.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,818.20 : 137,727.30 = 76,266.20 : x
  2. Step 2: Convert to fraction form
    91,818.20/137,727.30 = 76,266.20/x
  3. Step 3: Cross multiply
    91,818.20x = 137,727.30 × 76,266.20
  4. Step 4: Simplify right side
    91,818.20x = 10,503,937,807.26
  5. Step 5: Solve for x
    x = 10,503,937,807.26/91,818.20
  6. Step 6: Final answer
    x = 114,399.30

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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.