Home / 91,348.20-137,019.42-54,163.08

Finding the Fourth Proportional to 91,348.20, 137,019.42 and 54,163.08

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Solution

The fourth proportional to 91,348.20, 137,019.42 and 54,163.08 is: 81,242.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,348.20 : 137,019.42 = 54,163.08 : x
  2. Step 2: Convert to fraction form
    91,348.20/137,019.42 = 54,163.08/x
  3. Step 3: Cross multiply
    91,348.20x = 137,019.42 × 54,163.08
  4. Step 4: Simplify right side
    91,348.20x = 7,421,393,807.01
  5. Step 5: Solve for x
    x = 7,421,393,807.01/91,348.20
  6. Step 6: Final answer
    x = 81,242.91

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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.